I was amongst the 30 first or so to 60 on the horde side and made friends with a certain guild with a few 60s which joined me for UBRS rend runs, so normally I would take 1-2 DPS with me, in the start a healer aswell.
Jed and first boss is very do-able with 5man, I lacked abit of dps for rend but im sure with some more gear it wouldn't be a big deal.
I grinded out dal'rends and truestrike pretty fast this way, fishing for Jed everytime so I could bring 1-2casters so sword would have to go to me ;)