So this probably needs to be split into 2 separate deals.

Deal 1 - Gafford to Hawks for #22 and Kobe Bufkin (optional) - Trade into Hawks TPE

Deal 2 - #22, Martin & Hardy to Jazz for Sexton & #44

Mavs get under the first apron with deal 1 and then can aggregate salaries in deal 2.

After the deals, the Mavs have 13 rostered players & $8m (ish) still in play (before 2nd apron) to fill out the roster. Tax payers MLE and Bi-annual exception back in play