Il spare you the do more research because it's too late, but fo more research lol.
You can't pct while on testosterone, it doesn't work that way. You dont loose gains from dbol when you stop, you should keep gaining on the test. If your weight drops, you didn't lose muscle, you lost the water weight and glycogen stores from the dbol. Whatever your left with after that weight drop is the muscle. You might even maintain the weight because of the test.
After your last injection, wait 2-3 weeks and start your serm. If you plan on using HCG you can start that a week after your last pin and I like to use 1000 eod for 10 days then start your serm.
Do what you want but I'm just saying how I would pct.
Last pin of test, wait 1 week. 1000 HCG eod for 10 days. Start nolva and use that for 4-6 weeks. Then take about 3 months off between cycles. Continue to eat and train hard during pct and your time off or you will lose your gains way faster. If you hold more then 50% of what you gained going into your next cycle it was a success