I'm going to follow the same plan - going all the way for a like-real AK-101 clone. I'm going to remove the gas block for the handguard retainer, and put a side folder on it as well. Plan to use converted galil mags (found several conversion how-to links).
You konw I realized that the saiga would be ideally suited for a bullpup conversion... hrm... wheels are turning again....
I'm not really sure what I want to do beyond use the 74 style FSB. I like the idea of a 101 clone but I may want to do something different. I'm planning on using Bulgie mags, because I want to be able to use a five round mag for hunting.
ARe you thinking of using the KVAR bullpup conversion?