Where do you place now? How did you want to be in top 10?
Top 10 is a little too ambitious 
All I want is the tier with additional ascension material. Will have to see once event rolls in. I haven’t pushed 4* ladder last time cause I didn’t have anyone ascended and thought I’d better try for 3*.
But honestly 3* is garbage. I placed in top 50 and got a troop token for it. Unless you hit top 10 there it’s basically not worth the movement points 
Melandor would still be my pick either or way. I doubt it’ll guarantee you getting to top 10, but forsure it’ll ease your way into finishing it.