Is my 5-man Comp Crazy?

[nodoze]

So, I planned on leveling a Warrior-Holy Priest-Mage-Lock-Ele Shaman group by grinding dungeons almost exclusively to 60

... I feel like resetting the dungeons will be a royal pain with that comp. The only way I can figure to quickly reset is with a lock/mage combo. ...

I think people were recommending a 6th character be used to reset your instance and that 6th character could be on one of your 5 accounts. One recent discussion on how to do this:
https://www.dual-boxing.com/threads/55897-WoW-Classic-stress-test-Ragefire-Chasm-(RFC)-Full-run-part-1?p=421818&viewfull=1#post421818

A ranged spell based party should be doable with some benefits from being ranged. Thankfully rotations in Classic aren't that difficult to be able to handle different classes with reasonable efficiency.