So long as you applied by the deadline, when exactly you apply will not affect either your chances of acceptance and/or funding.
And to answer your question regarding Arizona: I was accepted there two years ago (for Lit, not Rhet/Comp), and I ultimately turned down their offer because of the teaching load. As their DGS explained to me then, they hit you with a 2/2 teaching load right out of the gate, which can be really overwhelming for a first time teacher. Having said that, I know their RhetComp faculty are really well respected and have clout in the field, so you should weight that against the teaching load.