You're lean so it would be a great time to blow up lean.
GH in for sure now as this will allow you to blow up lean on virtually whatever products you get on depending on your desired look.
Again depending on your look... Go Test E, EQ (maybe Deca), and Anadrol
or
I reccomend, the gh15 T-MET look (Test Prop, Masteron, EQ, Tren)