up the boost brah.
first of all i think you've made all the gains you're going to make just from 'cycling'. you're holding a good amount of muscle for your frame. but in order to pack more on your going to have to step it up a notch, meaning you're going to have to stop cycling. run a base of 600 mg of test year round. every 8 weeks for 8 weeks up the test to 800-1000mg, and add in compounds like tren, eq, dbol, anadrol, etc depending on what look you are going for. like others said, get some gh if you can afford it, but you'll want to be on it year round.
in a years time of doing this you should be walking around at 220-225 in better condition than you are currently in, which is massive for a guy whos 5'7.