It's been a while since I've had to think about dip, it's usually automatically resolved in the bigger machines I fly these days!
As far as your bank angle goes for your PA44 you would, in theory, always be doing a rate one turn, (10% of TAS +7: ie. if you were flying at 130kts = 13+7= 20degress bank angle). Dip is usually around 10-15 degrees towards the lower wing so you would normally allow the needle to go past the required track by approx 10 degress, then roll wings level and wait to see where its settles, I don't think there is any need to roll out at 90 & 45 degrees to go, that just delays the turn and could make more work for you when you have to roll the other way to get back on track! Hope that makes sense?!