I thought I was sure.. But again Very confused on wheel sizing

sinceday1

I thought I was 100% certain about 19x9.5 et15 and 19x12 et0 but now I'm getting confused about the sizing, once again. ISS forged is giving me an option to reconfigure so I am even more so confused as to widths and offset i should go for. (my mechanic doesn't seem to be knowledgeable about wheel sizes.. maybe he's covering his *** just in case)

I would like your expert opinions. Here are a couple background info.

1. I DO like small poke. not hellaflush but sortaflush so to speak
2. I like negative camber, again sortaflush camber
3. I plan to run wider tires than stock, preferably 255 up front and 295~305 in the back
4. am pretty set on 19s
5. am lowered on swift springs

Please respond with some feedbacks! Here are a couple options I was thinking of.

19x10 et20 and 19x12 et0
19x9.5 et15 and 19x11 et0
19x10 et20 and 19x11 et0
or anything that would satisfy me. no homo.

Thanks