I reckon your P bass and orange will do the trick nicely. Pino uses an Ampeg SVT when he plays with Mayer so you should be able to dial in the Orange no problem at all. Sounds like an awesome band! Good luck!
That being said if you want to go down the class D micro head route, I reckon the Genzler Magellan 800, Aguilar Tone Hammer 500, and the Mesa Subway D800 would be what I would be looking at.