I dont think it would be a bad choice at all, with TW heads that flow a good amount....you could prob. even go to 30's. I would rather err' on too big an inj. than too small. A good tune with the inj. and there should not be an issue.
24's, but have kicked around the idea of 30's...still might go to 30's but I already have 24's. FWIW-from my logs the 24's look safe when broken down by the BSFC but are kinda high on the % safe but close, I think 30's would be just as safe just on the "other side" of that close.