Quick Regimen Question

Hey guys, this is my first post here. THIS SITE IS FANTASTIC!! I have mild/moderate acne but it's getting a little better.

Anyway, I'm wondering:

I'm scared to use the BP when I order the Reginmen pack because my skin is already quite sensitive and red most of the time. My skin is also quite dry and I'm just scared incase the BP makes it look even worse... so I'm wondering what to do?

Can I use AHA+ instead of BP? Or will the results not be as effective? Dan said to use the AHA a month after the BP but why can't I use it at the same time?

Thanks very much guys, I love this whole community.