After talking with a micro reg here at FTR, I may go ahead and play 5nl. My reason to stay back was to uild the roll more and buy-in for over 100bb.
His arguement to me is that 5nl is the last time you can buy for more than 100bb so get used to it there. I have 20 BI for it so I may go for it. I will continue to play 6max at 2nl to continue learning that game and start grinding it out at 5nl. Its been so long since I played there (underrolled and scared) about 6 months ago.