agedhorse, I gotta say I'm a little surprised at this post, unless I'm misreading it? You mean each player bringing their own gear would be best? No... I'm sure you're aware that that won't work on a festival stage with multiple changeovers.
Or did you mean the OP's rig which he described (D800/NV610) would be best to provide as backline?
If the latter, I have to take the other side of that. There is no freakin' way I would allow a bunch of festival acts to run through my personal rig. Rent a head and cab, and make sure you're billing in such a way as to cover your expenses.
I think I'm missing something here.
Sorry to say it but when I do a backline gig and see one of those solid state Ampeg heads, my heart sinks.
I think it might have been slightly tongue in cheek (but also true).
Borrow the Chodehammer and be done with it!
Or pickup some other Peavey stuff.