@Papa-Al You should inject the Hams first and then vacuum tumble it for the best dispersion of the cure and seasoning. If you are wanting to speed the curing process you should still add a cure accelerator like Sodium Erythorbate and hold it overnight, this will give you the best color to your ham. You could inject with cure and sodium erythorbate, tumble and then go straight to the smokehouse but we would recommend holding overnight to let the cure work in the meat and “burn” it a nice pinkish color. You can add a meat stabilizer but it’s not necessary. Check out our youtube ham video for more tips at https://www.youtube.com/watch?v=5awR77SQmbg