Help choosing kettle, HLT, mash tun etc

Hello folks, I am an extract brewer looking to go all grain and want to upgrade my equipment.  So far I've done 2 small all grain batches using my stove and small brew pot and it's just not cutting it.  A friend of mine is splitting the cost with me and we have around $1000 to spend.  I'm in Canada and so far this is what I've picked out for parts:

Kettle: http://www.ontariobeerkegs.com/10_Gallon_Heavy_Duty_Stainless_Steel_Tall_Kettle_p/10gal-tall-kettle.htm

HLT: http://www.ontariobeerkegs.com/15_Gallon_Brew_Kettle_OntarioBeerKegs_p/15-gallon-2weld.htm

Mash Tun: http://www.ontariobeerkegs.com/10_Gallon_Igloo_Cooler_Cooler_Only_p/10-gal-igloo.htm  (I have the parts to DIY)

Some of the recipes I've been looking at have different temps during the mash and was wondering if there's a better way to adjust the temp other than decoction or adding hot water to the mash.  Is there something like the brew kettle that will retain heat like the cooler mash tun but will allow me to raise the temp with my burner?

We're also debating between using propane burners and induction.  Are there any cons to using the induction burners?  We were looking at buying something like this http://www.webstaurantstore.com/avantco-ic3500-countertop-induction-range-cooker-208-240v-3500-watt/177IC3500%20%20%20208*240.html

Finally can any Canadians recommend me some homebrew websites to order bulk grain and hops from.  I've searched and have found 2row domestic for $50 per 25KG and hops at around $16-25 per LB.  Locally my homebrew store charges $70 for 25KG of 2row domestic and hops are sold by the ounce only at $2-3 per ounce.

Is there any difference between the Beersmith software on a mobile device and the desktop versions?  Any lacking features?  I downloaded the PC trial and love it, just debating which version to buy.

Thanks in advance for any advice.  ;D

You can save a bunch of money and make beer as good as any expensive system by following Denny Conn's method:  dennybrew.com

I don't think Denny discusses it, but you can do step mashes with his system; add boiling water to raise your mash temp.

Consider building an electric brew kettle following the instructions in:    http://www.theelectricbrewery.com/
You don't need the expensive hole punch they specify and you don't need their electronic control system. You can wire the water heater element to switch between 240V and 110V. Raise the temp rapidly with 240V then hold your temp with 120V controlled through a temp controler (STC-1000 is a popular controller). If you're not comfortable working with electricity, find an electrician who likes beer.

You budget will be sufficient for the mash system, kegs, CO2, a (used) refrigerator, a temp controller, and some craft beer to hold you til your first batch is ready.

I'm definitely leaning towards going with some sort of electric element.  Would something like this be ok for bringing 5 Gallon batches to a boil fairly quickly?  http://www.homebrewstuff.com/15-boiling-brew-heater-controller.html

We already have 4 kegs and 2 CO2 tanks so the budget is basically for the brewing hardware and hopefully some bulk 2Row and hops.

Unless you due very small batches 1800W is way to low especially for $199. 220 volt 5500W heating elements $24, PID with Manual mode  $40, solid state relay $5 to $15 and Complete Guide to Building Your Brewery $19.95. 

The more reading I'm doing I can see that 120v elements will be a bottle neck.  We're going to have to see if 220v element will be a possibility.  Otherwise can anyone recommend an induction cook top?

Buying grain is very hard on shipping because its heavy ...

Hopefully I remembered your pot configuration correctly, 10 Gal kettle, 15 gal  HLT and 10 gal Igloo MT, correct?

I would reverse those and use the 15 gal pot for the brew kettle and the  10 gal pot for the HLT. With a 10 gal Igloo cooler for a MT. You could easily use a 5 gal Igloo cooler for your HLT.

I brew imperial brews with 10 to 12% ABV. Have a 15 gal Megapot to brew in, a 10 gal Igloo cooler MT and a 5 gal Igloo HLT. I have NO heat loss from the Igloo coolers. Typically use 20+ pounds of grain, mash with 6 gal water for 1 hr, fly sparge with 5 gal water (11 gal total minus 2.5 gal absorbed by grain) and end up with 8.5 gal wort in brew pot. Boil off 2.5 gal water over 90 min boil and end up with a 6 gal batch in the carboy. I only use a single temp for mashing but if you want to temp step the mash, go with a HERMS system. They are much cheaper to build and can not scorch the wort as a RIMS system can because no wort comes into direct contact with a heating element. A 5 gal pot with no spigot will work to heat your mash in the Igloo MT via a coiled copper tubing set up, same as an immersion cooler, but with a pump to circulate the wort attached. 

You may be able to use your 15 gal brew pot as a HLT and temp step the mash. Once mashing is done, drain the water from the 15 gal pot and fly sparge the wort into it. No extra pot of burner to buy.