Tren is the GOAT but make sure you use n2guard with it. Also I'd recommend keeping it at 7 or 8 weeks and being flexible week to week. You may find that 300 mg is too high so drop it to 200.
When it comes to dbol, it is the absolute GOAT when it comes to bulking! I've seen people blow up 15 or 20 lbs. on it but make sure you use an Aion so you don't get gyno.