200mg a week of Test still seems low to me.
If it's a starter cycle, then I wouldn't be running Primo also. I would bump the test up slightly instead. Multiple compounds on a first cycle is tricky, especially if you develop sides. Having said all this, we don't know his stats or goals, so any comments don't really hold any weight.
Back to the question at hand (Sorry, forgot you actually had a purpose to this post

) - Yes, split the Test-E and Primo into two injects (Mon/Thurs). Mix both in the same barrel and fire away!