Glue the fretboard to the neck. Glue the back on. Do any binding you're going to do. Sand the body. Fit the neck. Finish the neck and body separately. Install the neck. (With a dovetail neck joint I would install the neck before finishing usually) Then level the frets.
For good playability all the frets need to be on the same plane and not just a fix on a high fret here or there between two other frets. That's wild goose chase. Since you have glued your frets, hammering them in now will only weaken joint. You need a dead flat level beam with sandpaper attached that is a little longer than your fretboard to level the frets. You can mark the tops of your frets with a Sharpie but in the right light with good magnification you can see the scratches from sanding. Every fret should be touched but do as little leveling as possible. If you leveled the board well before installing the frets this will be easy. A little fall away after the twelfth fret will lower the action. Maybe .003".
Then you have to recrown the frets. Tape in between all of the frets. Stew-Mac sells some nice pricey diamond recrowning files that don't chatter but I mostly use a little concave block I made to use with sandpaper for recrowning. It shouldn't touch your fretboard. 220, 320, 400, 600 carborundum paper followed by Liberon steel wool for polishing. Do this evenly with a very thin line of fine scratches along the whole length of each fret before you polish.
Bob's your uncle. My 2 cents. There are whole chapters in books on this stuff, some with questionable advice.