are you sure youve cycled properly before? not trying to be an ass, but that should be one of the first things you learn how to do is to convert your mg into ml. but to answer your question, it depends on what concentration your gear is. example if your test is 250mg per 1ml.. and you want to do 500mg per week, then that would be 2ml.. following me? the concentration on your bottle determines the ml you use. and just in case you didnt know, 1ml equals 1cc..
and my personal opinion bro, it would be a good idea to get your PCT planned out before you start and read up on all the sides that your compounds cause, gyno, shut downs, prolactin induced gyno ( which deca will cause) ect.. Like bigbassturd said, deca can really mess you up.. Might would be a good idea to run caber or prami with your deca to keep the prolactin under control.. also adding HCG into your pct, hell even during the cycle to keep the boys nice and plump would be a good idea as well.. deca shuts you down HAAARRDDD and its a beech to recover from. deca requires an aggressive PCT. Just my .02 Good luck and stay stafe