Dude, I think ur wife will qualify for F2 not H4 coz ur H1 is starting from Oct.Please consult ur international consular.If ur wife applies for H4, embassy will perform PMIS verification and will know that ur H1 date is oct and H4 application will disqualify.I don't mean to discourage you but I think I am right.Good luck.I know after oct 1st ur wife will 100% qualify for H4.

CAP Gap means u r still on F1.