Your water is fine for brewing. You have a lot of room to adjust for various styles and flavor profiles.
Don't worry about the water pH. Unless the pH is strongly influenced by some kind of acid or alkali addition, it isn't influential on mash pH.
The mineral profile you have seems out of balance. The balance between anions and cations is off, significantly. Part of this is that there's no reference for the units used. I had to make some assumptions to get close as I believe the Calcium number isn't ppm. With some assumptions, it seems that you'll get a pH of 5.4 without any adjustment. You can add 5 gm of CaCl per 20 liters to enhance the calcium content, add smoothness and lower the pH to about 5.3.
Of course, there is a lot of room to adjust minerals for a variety of reasons beyond pH. If you add minerals, make sure you have a reason to do so. There is a considerable focus on water as the core issue in homebrewing. Looking too closely on any one issue as the key in brewing success overlooks the fact that brewing is a series of processes all strung together. Like other parts of brewing, water adjustments can have dramatic and beneficial impact on beer. But, I'm not a fan of dogma that pushes towards all water needing to be "built up."