Hi! I´m making my first big project: a queen size bed using spanish cedar; and I have a LOT of questions. The first one is about the posts. The side rails, the footboard and headboard are all 1 1/2 in. thick and 7 1/2 in. wide; I´m gluing up two 1 1/2 in. pieces for the posts and I want to know if I can make the mortise in the posts before gluing them up(so I can fit the tenons easily), or I have to glue up the posts first?