4 months on a thermo? I would cycle a thermo but that might be just me. Here is an article by Shelby Starnes that I think has a lot of useful information.
Also, I notice that all of your goals have to do with gaining lean mass so why the thermo? I realize you lost 50 pounds so you may have body-image/issues but if a product doesn't help you reach your goals why waste money? Try a supplement that gives you a good pump and increases training performance. More intense training session burn more calories but are also a means to an end with your goals.