I believe
Farsha is fairly easy to obtain and has the highest base damage after Relic/Mythic.
If you are in no hurry then might as well go for it and an OaT Axe as offhand. I think the OaT 2-4 Axe would make a better offhand than the OaT version.
As for your gear I'd say get Dusk gloves and Suppanomimi (in place of the Flame Earring) right away as first improvements. There is no point in wearing perle hands unless you can reach haste cap with them and want to increase your base attack when meleeing.
For WS, giving up the body for some raw Acc is a big sacrifice. You would be much better off with Perle body since it at least offers some STR, DEX and more importantly a flat +2% Critrate increase.
Start upgrading Ferine hands and feet to +1. You will like them for Rampage.
I'm not sure how your current Rampage is performing, but -20 Acc from Varangian on a 1 hand, 5+1 hit WS sounds a bit of a leap of faith. Try out perle head just to see how that goes.
Sky gear is very easy to obtain now. I'd suggest getting a pair of Byakko's Haidate in place of Tumbler trunks.
I'm resorting to these suggestions because I'm not sure which Atmas you'd be using for your pet, so some old gear may still prove beneficial to you.