when to hit underfootFollow

if your lvl 80 with 400+AAs and with elegant defiant + a few sof/sod peices, is it too early to get into a uf group or should i do boomerangs until i have the invisible peices? or OMMs first.. or.. do i absolutely need to get SoD T-(3+?) gear before even trying? would be pointless at this point to go for SoD stuff if i can skip it and get UF stuffs

also on a side note, i hear that beza/zeka instances are some of the best xp from 80-85, should i grind to 85 before UF or should i do my grinding IN uf?

thanks

Actually it depends on your class to a large extent. If you are a tank then 80 is too low, 85 with 1500+ aa's and full T5 is the minimum for a tank, melee and support classes can get away with much less.