I think in your case how much you can carry on the bike will depend on the rack capacity, which it will say somewhere on the rack or in the manual. The rack on my husband's bike looks a lot like that and it's max is 55 lbs.
Schwinn actually puts a weight limit on their bikes, at least some of them. I bought a Schwinn Suburban, took it home and read the manual, and it had a maximum of 300 lbs. I was a little over that...but the real reason I took it back was that it was just too tall for me at 5'3". I have a bunch of metal in my leg and I have broken bones in that foot just from taking a wrong step, so I had to be able to touch the ground when I stopped, without leaning over sideways.
About getting matching bikes, my husband loves the idea of matching bikes, but I don't...90 percent of the time I am not riding with him, I am not picking my bike according to what he might like. I got something comfortable that appealed to me. (He took what was left in the bike budget and bought a bike at Goodwill
) You should ask at the bike shop about weight limits on the bike he likes...but the suspension fork is often not comfy for heavier riders.