EV HM will be a breeze, I have killed the first boss in that with
and cleared most of EV SM with two marauders. I'd go for NiM minimum. S&V SM will be interesting.
We are trying an 8 Marauder Nefra SM in our guild next Monday (granted, 5 of them are alts) and depending on how that goes may try something a bit harder. I will speak to the other mara I two man things with and see if he is interested in joining your group.
Until then, good luck with your run.