Thoughts on how E Kane, Vrana, Couture & Kadri stack up vs my secondary options, when healthy?

At the moment I've got 2 guys on IR (Backstrom/Varly), so I picked up Khubobin but still have 1 empty spot.

Looks like Khudobin is back up for the moment, so once Varly is back I'll probably drop him anyways.

I'm obviously loyal to who I drafted, so the likes of Palat, Batherson, Mantha, vs say Meier (waiver claim) and Khudobin, but I'm always looking to improve.

Thoughts? I have #1 waiver priority at the moment, but obviously I wouldn't say grab Vrana and put in IR slot until I activate someone, so it just gives me more options for later.