did you take an AI or anything for prolactin control (dopamine agonist/DA) on cycle?
letro is not a good choice to start at this point, as it takes a while to build stable blood levels.
to run HCG right, you're prolly gonna need to run it 2-3 weeks, and stop a week prior to starting your SERM (Nolva, etc).
personally, i think it would easier to do your PCT instead of starting this now. however, you could start an AI (aromasin), DA (prami) and the HCG (500 IU EOD) for 2-3 weeks, due to the long half-life of deca and the total dose/length of your cycle.
i guess it's up to you, and how you've recovered before...