I just bought a steez stz681mlfsa spinning rod , i mounted a feugo 2500 reel w/ 6lb suffix elite . what would you use this setup for senkos, spinnerbaits, lipless crankbaits, jigs, etc.

If it were me I would use it for drop shotting and maybe wacky rigging. That med-light action is a finesse rod. Spinnerbaits and cranks are gonna cause quite a bow in that rod unless they're very small. Read the lure weight specs on the rod and that will help you out picking the right sizes to use.  Nice rod, congrats.