Looks to me that you are off to a good start. Just keep at it and it will progress.
Yes I have heard Peters does a good job with heat treat,
Don't be afraid to stick with the Work Sharp for now. It does well.
With the Edge Pro, I start with 120, then 220 then 600 then strop.
I keep the stones wet and clean with water and dish soap.
What ever you method of sharpening, rolling a burr and holding a
consistent angle is very important.
You will find that blades do not grind a lot different after heat treat than before.
Fresh belts are important.
I found 440C to be a little "slippery" on the belt due to the high chromium content, but pretty easy to work with.
There, how is that????
Tim