Personally, whatever project you start I would only take to 3-70 to wait & see if you get Tulleria next month.
Of the options shown I would personally go with Morgan Le Fey. She’s a pocket weapon on defence & a nightmare to kill on Field Aid battles if shes surviving on her own in the wing…
I rate Morgan as one of the best wingers in the game… Better than most Rogues…
She also does a great amount of damage… I have mine at +17 and she (even with less emblems) single-handedly has taken a raid from all-out losing to a win… She’s gone from 4 vs. 1 losing to 0 vs. 1 winning…
Anyways, She’s my vote for now… but like I said, wait till end of next month before using Tonics to see if you get tulleria… if you get T, it’ll be between Tulleria & Morgan 
and that won’t be an easy choice