I home brew, and am in the restaurant business. A few thoughts.
It sounds like the the Brew Magic system only does .5 kegs at a time. Since a Brew Day is a Brew Day, it would cost $100 for .5 kegs labor alone. Ingredients in as small amounts as you have to buy would be another $40 for .5 kegs. Cost would be $2.34 per 16 fl oz pint glass. But you said money is not an issue.
You didn't say where you were. Fed Brewing Permit starts at $2500. Add to that local permits. You might have to change the designation of your current bar, depending on your state laws. In many places, a Brewery can retail, but a Retailer can't brew.
You would have to meet all inspections from ATF, IRS, Health Dept., Fire Dept., Building Codes, EPA, and the local municipality. They all charge. But you said money is not an issue.
Everytime I went to start something new, everyone from the Health Dept. to the bank, to the insurance agent, asked the same question. 'What experience do you have?' Will they be satisfied that you have brewed 6 batches of homebrew? But you said money is not an issue.
Lets simplify things. A good micro would cost you $.90 for a 16 fl oz pint glass. (I know this sounds redundant, but most 'pint' glasses in bars pour 14 fl oz.) You would be losing money every time you sold one of your beers. But you said money is not an issue.
Most 'brew-pubs' use a 3-4 bbl system. That's 6-8 kegs per week. Still not big enough for a profit, but a good conversation piece and a draw. But, you said money is not an issue.
You didn't say how big your bar was. Or, what area you were in. 18 taps at only 1 keg a week sounds like you are stretching thin. How many tables do you have, and what's your average per night at each? Don't guess at this, you should have a POS that will tell you.
How many tables can you fit in that 1500 sq ft area, and at what return?
But you said money is not an issue.
I will support any new brewery. But a business plan that plans on losing won't work.
Keep homebrewing, and do your homework. Talk to some trade groups. Talk to some suppliers. Talk to your bank.
When you are losing it, money is an issue.
Prosit.