It wouldn't surprise me to see them at around $140 million in salary.
Of course, I could also see them stay under the tax because the real goal would be to clear cap space for the 2022 and 2023 off-seasons and sign a free agent to have a star studded trio. In 2022 there is Steph Curry, Julius Randle, Zach Lavine Kawhi Leonard. In 2023 there is Harden, Durant, Beal, Butler, LeBron, Jokic, Embiid.
Clearing cap space for those two off-seasons could be priority #1.