I can give a little advice on sizes...
I have a set of Pirelli 275/30 R19 and 345/25 R20's and would recommend them for a 9.5" rim and 11.5" rim (maybe 12"). I had them on a 12.5" rim and they sucked in too much for my taste. This set is now on a 11.5" rim and has a perfectly vertical sidewall.
Once the Pirelli's were taken off my 19x9.5 and 20x12.5 Forgeline wheels I needed a new set and went with the 275/30 R19 and 335/30 R20 PS2's and couldn't be happier! The PS2 335's are almost 1.5" wider than the 345 Pirelli's and I would assume the Nitto's are on the smaller side like the Pirelli's.
All of the reviews that I have read say the PS2's are some of the BEST tires made.
I think the 275/35's on the front will be too much side wall (plus I don't know that they exist, they are not listed on Tirerack), but I like the raked look. Look at Killer 69's Camaro (
http://www.lateral-g.org/members/foster/)
He is running the 335/30 R20 PS2's (28" tall) and I think 245/35 R19's (25.8" tall).
Good Luck!