I admire the way you are taking on this project slowly and thinking out the steps. Keep posting your steps as you do them and ask first if you aren't sure.
There is no way to overstate the importance of getting the entire blade completely pre-finished before HT. Any spots not completely sanded smooth and scratch free will be that way in the finished knife. If you think sanding was slow work and thumb numbing on an annealed piece of steel, wait until you start the finish sanding on the hardened blade.
The difference will show when the chap who didn't make that effort shows his knife to friends and relatives and says, " I made it myself", and they nod and say "Cool". The chap who spent the time to get it right and sanded until the blade shines after HT, will say, "I made this myself", and the others will say, " No way! That looks super."