I believe I hit 245 lb under 10% BF after recomp. So that would be just over +30 lb lbm gain (~33 lb) after strict cut. But I think you are pretty accurate here since it requires nailing everything else. Then of course my heart told me to stop :-).
Highest I ever went in any short of sustained fashion was <=150 mg/week TC + <=160 mg/week ND. (19 weeks).