A lot 4,000+ calories to gain the type of weight your wanting. As far as strength goes your only going to gain strength in two places in the gym training or from within, meaning your work ethic.
You can take all the AAS/PED’s you want to and get big and strong AF but it will not make you a better fighter or replace hard work.
I’m going to say this with all due respect but I feel you are going about all this the wrong way. If you choose to use what you have to use, use it responsibly, eat as much as you can and get your ass in the gym, bust your ass, work on your craft and develop your skill set and I guarantee you the strength and everything else will follow.