Advice for the mid point of cycle

[ShadetreeJones]

Currently I'm at the six week point of a 12 week cycle and have leveled off a little in regards to size gains.

I've been doing 500 mg a week of Sust with 250 mgs of Deca and just received 2 10 ml vials of Mastabol in the mail.

My question for the forum is would one recommend adding 200-300 mgs of Mast to the current cycle or up the Sust by 250 mgs per week? Both? Neither?

I'm 33, first cycle, 6' 220. Zero side effects so far, I've got Nolvadex on hand and started taking 10 mgs EOD a week ago just in case.

Thanks in advance.

[ShadetreeJones]

Up the Sustanon or add Mastabol?