I’m building a 2-1/2” door using stave cores for the stiles and rails. The door will have 3/4” vertical planks on both sides with insulation in the middle. Widths will be 5” for stiles and top rail & 8” for the bottom rail. Each stile will be 2-1/2” thick but for each rail i’m planning to do 1” thick because I’m going for a vertical planks only look. Jointing will be a through M&T.

This means my tenons will be roughly 3/4” thick max with 1/8” shoulders. Am I asking for trouble and should I double up the tenons?

Thx.