Everything Mike just said, and I highly recommend sanding az opposed to planing after you finish stripping. When you plane mahoganies you have to constantly watch the grain as it goes back and forth. It also likes to warp after sawing thin be wise of the grain, but it easily bends back to where you need it for stripping. You will love chiseling it if you do any inlays. It works very easy... Until you try to plane it!

Mike I use a mahogany very similar to Sapele and never had a problem with adhesion. I sand to 600 grit and then precoat with epoxy. I use 600 when using balsa along with mahogany mainly because balsa shows scratches easily. If using mahogany alone I go to 400.