So if you want both a QB coach AND a TE coach, then you have to get rid of someone else
OC, DC, OL, RB, WR, DB, LB, DE, DT would be the other options so you'd have to get rid of one of those.
I guess there's some way you could consolidate DE/DT or DE/LB (depending on scheme), but that's tough here with so many new hires there and the LB coach also working as the ST coach