2. Yes, you can use stack DCP with Slin-Sane. Dose DCP @ 2 tabs ~30 min pre-meal; dose Slin-Sane @ 1 cap 15-20 min pre-meal (although you can dose with the DCP).
3. Yes, you can stack DCP with Assault - I have and do.
4. You can stack DCP with Shred Matrix - I have and do. Regardless of your goal, DCP and Shred Matrix would be dosed the same - I never change my dosing of either. DCP: 2 caps first thing (optional - but good re fat loss), 2 caps pre-meal in the am, 2 caps pre-meal in the pm, and 1 cap pre-bed (optional - but good re fat loss); Shred Matrix: 3 caps 30-45 min pre-meal in the am and 3 caps 30-45 min pre-meal in the pm.
5. Just dose 2 tabs DCP and 1-2 caps of Slin-Sane ~30 minutes pre-meal.