Trade advice: package Ridley/Yeldon?

I have Calvin Ridley, Yeldon, Lamar Miller, Tevin Coleman, and Tyler Boyd on bench/flex. Zeke/Ingram and Thielen/Davantae as starters. I’ve never been great with trades in fantasy. Should I be looking to package some guys on my bench to add an always start flex guy? Or should I maintain this depth on my bench?

Just threw Yeldon and Boyd at Kareem and same package at McCaffrey. Is that overreaching? On the right track?