Also what is your body fat percentage and how long are you planning to run the cycle? Do you have an AI, Caber, and your PCT lined up already? How long have you been training?
You won't have any problem getting "too big" from just one cycle. Diet will be the most important factor in size gain.
+1
Recommended to do 100mg Tren Ace EoD. Test Cyp @ 600mg per week is a good amount. Like rascal14 and others have mentioned, make sure you have good AI, Caber and PCT all lined up.
You are going to need to run it at least 8-10 weeks to see some appreciable gains. Unless you have freakish genetics, you won't have to worry about getting too big (is there such a thing)? Just kidding.
Make sure you use clean needles every time, clean the injection site with alcohol , minimize air in the syringe. push the syringe to let a few drops coat the outside of the needle (it will ease the injection), rotate the injection sites (glutes, shoulders, upper thighs - plenty of sites for this info). Don't freak out if you pull out the needle and some blood runs out - it happens if you nick a vein going in.
I personally would run HCG, if you can get it, at 250-500IU E3D throughout your cycle and end it with you last injection. That way your "guys" don't go dormant during your cycle. Start your PCT after that.
Others will probably have more info to add. This is just my initial thoughts.
Good luck and let us know how it goes.