I would like to get some advice from current PVE 5 boxers.

Lately I've been getting very frustrated with the quality of PUGs heroics and have been thinking about adding 2 more accounts and starting a new 5 box team with a focus on pve. I don't have any of the characters for the "ideal" pve 5box, which from what I've read and what seems logical, is pally tank, mage, mage, mage/warlock, holy priest. With this combo using 1 or 2 PCs and keyclone and assuming I use the standard macros and control setup, do you guys think I can:

1. Complete appropriate level range instances (eventually heroics) without taking much longer to clear them than a PUG.
2. Make enough gold to decently equip the team by disenchanting everything from the instances.
3. Swap my raid characters in at times when they need badges (Prot war, enhance shaman).
4. PVP a limited amount to fill gear holes, and not completely suck at it.
5. Not go insane trying to make it all work.

If those aren't goals that an at best "average" boxer can achieve, I will probably roll up a pvp oriented 4 or 5 box using locks and a priest, or shamans, and just do pvp for fun and dailies to try and make some cash to support them. Anyway, any advice would be appreciated. Thanks!