It depends on how much leveling you're doing...

I recently did 1st to 80th, RAF boosting for seven compositions.
Because I'm planning on ten boxing (from five), I did Booster + AB>FG.
So I have those same seven compositions two more times: Booster + CD>HI and Booster + E>J.
I'm taking a break at the moment...

Then there's 80th to 90th, on seven 10-box combinations...
Which could be 80th to 90th, on fourteen 5-box combinations.
That's going to be some time too.

I'd call one team relatively painless.
But multiple teams, less so.