Yes you can but be careful. I don't recommend it unless you have an oxy tolerance. But if you do it, do not take more oxy than you normally would, because otherwise as the MDMA wears off there is a danger of ODing on the oxy. Keep your doses normal to avoid this.
Don't mix Xanax in with it because combining it with oxy is a bad idea in general, but it'll also kill your roll anyway, so it's pointless.
Definitely avoid the tramadol because it's an SNRI and could cause serotonin syndrome combined with MDMA. And you won't be able to feel the opioid properties of tramadol over MDMA anyway so again, waste of drugs.
The Adderall will just cause anxiety unless you have a tolerance to stims already, unlikely to be physically dangerous unless the dose is stupid but likely to be unpleasant and a waste of drugs.