Hill90... Test/Deca is a very effective stack, but it is HIGHLY advised not to use both compounds for a first cycle. As StoneCold has already suggested, run 350-400mg/wk of Test for 10-12 weeks and put the Deca in a drawer for use down the road. The reason we advise against using more than one compound for a first cycle is because if you encounter a negative side effect, you may not know which compound is causing it. Testosterone is more than sufficient in providing all the gains you could possibly want for a first cycle.
If you need to use Deca because of joint issue, you may want to re-evaluate cycling right now and get that figured out first.
Hope this helps and you make a good decision.