I recently bought a used Trek 750, and was kind of interested in wanting to run cantilever brakes again. After much adjustment with the old pads, and with brand new Shimano pads, I remembered why I converted my old mountain bike from cantilever to V brakes, and I ended up doing the same with this 750. I found a set of silver (to match the other trim on my 750) Tektro Mini-V brakes; I liked these for the low profile they have. I use them with standard V levers (actually, Shimano ST-EF51 brake/shifter combos) and they work great. I'd recommend regular-sized V brake arms (95-105mm usually) for your bike because you'll be using larger volume tires.
The Schwinn 1.95" tires will probably ride well. They're likely made by either Kenda, Innova, Cheng Shin or similar. Are they these:
https://www.amazon.com/Schwinn-Stree.../dp/B0088X3VL6
If so, they may be made by Kenda because they are pretty much a match for the Kenda Komfort tire. Reviews of those note the smooth ride, so I'm sure you'll enjoy them.