dont get WE, leaky pistol mags they dont work as well as a TM or a KSC, 7 inches is just kinda stupid IMO unless ur playing IPSC, and if ur playing as a "sniper" role than a 7inch pistol is just stupid, u want to lighten your load first of all and having a 7 inch weapon isnt exactly versitle, go for a 5 inch gun.
Guns id recommend you getting include
KSC HK USP
KSC HK .45
Umarex HK MK23
TM HK MK23
I recommend these guns because u said ur hands were big