@brandonscrx
I would just get on it to start with, and not worry about a taper plan until you feel stable enough to start doing so. Of course with any maintenance drug, probably best to start out with lower doses and raise as (if) necessary...
As far as the withdrawal is concerned, I can promise you that any you might experience from bupe in the future will be a damn sight more comfortable than that of IV heroin... It really shouldn't be that bad if you do a proper taper. I won't say it won't still suck, but you'll be so glad you did once it's outta your system for good...
You have to honestly want to stop living the lifestyle... and Suboxone is a great place to start. For me it (almost) completely killed all craving for oxy, and it felt so good just to take the chase out of my life...