I have not use dymethazine, but I know enough about it to say I'd treat it just like any other steroid. I would only run one oral at a time. I would also use at least a small dose of test as your base to the cycle. If you wanted to use primo and winstrol, the cycle might look like this
1-10
Test E 250mg EW
Primo 400mg EW
adex as needed
1-4
Dymethazine
9-12
Winstrol 40-50mg EW
You can take your 1,3DMMA preworkout, but since it's hard to come by now days, I'd save it for your harder workouts like legs and back.