Which RAs should a Valewalker get?

I'll be mostly zerging starting out, then hopefully grouping once high enough RR. Might dabble in solo but not planning on investing in solo.

Hybrids are hard to decide RAs for.

No brainers would be Tireless, Longwind, Det9?, Purge2...Ichor?

Teach me, Obi Wan Scythe Nobi