Test/Tren/Mast is a great cycle for cutting. In fact, its the combo that most competitors will use when you see them on stage. It isn't going to be a good cycle for gaining a decent amount of size, especially if you have been cycling for awhile. There are many better options out there. 

First, for gaining mass, I would always lean toward the long ester drugs. My personal favorite test for mass gains is Sust, but test cyp or test e would work fine too. I can't give you a specific dose, as I don't know what your dosing history is. If you have been using X amount of test for your cycles for a consistent amount of time, and don't feel that X is doing it for you anymore, I would say that it's time to start running an additional 200 to 250mg Test in your cycle. 

If you were new to gear, the test alone would be fine. You would make great gains on that alone. As we go further into drug use, it requires more gear to continue to evoke a strong response. This is where we add a good anabolic on top of test. The synergy of 2 compounds combined will create a greater response than if you were to run 1 compound using the same total MG's. Deca or EQ are both staples of mass gaining. EQ is a little drier. Both can give great gains. Neither of them are going to make you fat, as some people might think. Fat comes from your diet. Your keepable gains come from your diet too. If you have your diet in order, you can make amazing gains, using 400mg Deca OR 500-600mg EQ

From there, you can consider using an oral to kick start the cycle. My choice is always dbol. The gains are fast and I get strong. 30mg should be plenty. If you can't grow off of this cycle and maintain the muscle, something is off with your diet program. 

1-16

Test

1-14

Deca or EQ

1-6

Dbol

If you use Sust, PCT starts 3 wks after last shot