I'm doing F1 (and will soon start H1) 4-5 days a week, and I would like to also incorporate some metabolic conditioning. My reason for this is that I'm about 15 lbs above where I want to be. I'm dialing in my diet first (since that's where it starts), but I want to incorporate some other things to get my heart rate up.
I'm thinking a rotation of sprints, airdyne, and erg in the form of intervals and sprint sessions 2-3 times a week, depending on the volume in F1 and H1. Does this sound like overkill?