It turned out I was not as fast as I thought, althougth I did pretty much as guesstimated in my previous post. Here's the full data:
finishing time: 4.49.58
Swim+T1: 32.16 - Bike+T2: 2.49.04 - Run:1.28.38
Sunday and Monday were relatively easy, with 2hr ride + 1hr swim (good times, tho) and 1hr run.
Tomorrow is day off, and it all starts again on Wednesday