It's not much of a problem if you only require it for doing leves, the buff lasts the entirety of an hour.

After youve done your brackets leves for a bit youll start to learn where you can get which ranks more often, and prepare accordingly.
Getting support, even guild is very cheap at your rank so just always get it if your not sure.

It's a bit more of an issue when your mass producing, but that's offtopic.