yah makes perfect sense. i happen to also have tap water that has 7.6pH lol. i do the same liquid test, though i dont bother with the pet shop doing it for me cuz i do it right at home with a water testing kit. i advise you get one if youre gonna get serious with tank keeping lol. if you dont think youll have much time for this tank, and would just liek to throw food into it once in a while to feed your fish and would do water changes when ever you actually have spare time, then get a test strip kit. itll fit your time shcedule better becuase results are instant, but are very inaccurate. liquid tests are more accurate if you use them according to the directions lol.
I'd say you can keep any livebearer, smaller african cichlids, and brackish water fish like mollies, if youre into that.
that said, fish like bettas, corydoras catfish, otocinclus, raphael catfish, rainbow fish,and goldfish could all do fine in your water. though if you go with goldfish id say get only one for that tank...so that might not be what you wanted to hear lol.
since you want a community see if this fits your style:
Livebearer: 7 platies OR 4 mollies OR 4 swordtails OR 10 guppies, 5 corydoras catfish, and a few snails.
Random community: 4 dwarf gourami (1 male 3 female) 12 neon tetras or smaller tetra/rasbora species, and around 12 pygmy corydoras.
Radom community: 6 dwarf rainbow fish, 5 otocinclus, 5 pygmy corydoras.
i just gave some radom ideas. if you wanna go with the gouramies you may want to get some floating live plants for cover as well...
also like Kissy mentioned make sure you read up on cycling fish tanks.