for multiboxing with 2-3 accounts then wormholing and L5 missions would be your best bet for pve, now i havent done any L5s myself but from what ive been told they should be doable in tengus ( soloable actually so 3 rr tengus should have an easy time ), for WH pve you just start at c3s with some drakes/myrmidons and move up as you get more skills.