Focus on the basics man. Get your weight back up naturally as much as possible with a solid diet, hard lifting, and consistency. You have your whole adult life to cycle, it's not something you wanna jump into prematurely. But by all means learn.
Also, this is a great forum but you gotta have thick skin around here. Noobs get a hard time sometimes but only because we like to see ppl do research and have solid workout routines, diets, and a good foundation of natural bodybuilding before jumping into AAS. Only looking out for your best interests, don't take it personally.
Ok, off my soapbox. OP, I highly recommend a SERM for PCT for this kinda cycle. SD alone requires a SERM in my opinion. It made my nips flare up, luckily the Nolva managed it.
I agree w/ Pembroke, run a SERM (or at least have one on hand) along w/ some OTC products like a test booster, cortisol blocker, or an all-in-one product like Post Cycle Support or PCT Assist. A SERM plus sustain alpha and trib like you originally planned would work great as well.