TweetI wouldn't do deca solo. I did, and I wish I had added atleast a 200mg shot of test every week or every other week.
If it's your first cycle I'd do something like test solo @ 400-500mg/wk.
If you're set on the deca...do something like 400mg deca/wk with 200mg/test per week for 10 weeks or so. That'll be enough to help keep you functioning properly.
Hope this helps