From what you describe, Premiere Pro already has you covered. It’s weaknesses are:
1) instability on larger projects (20+ hours of footage), especially if you load up on cpu heavy codecs like DSLRs, etc
2) poor trim tools, making fine adjustments annoying and more time consuming
Both of those issues have apparently been solved in CS6, but you could easily operate on 5.5 from what you describe. The beautiful AE round tripping is what’s going to save you the most time though.