Sounds like you are staring the same way I did... with a piece of damascus and a desire to do something special.
So here are a few tips from one who walked that road.
Step away from the bench grinder. Beyond knocking out the basic shape, it isn't the right tool for knifemaking.
Stock up on files and sandpaper. I know, you're probably impatient and will quickly tire of using files and sandpaper, and they you'll start looking at belt sanders. If you're wise, you'll just look, but not attempt to use them yet. Sadly, most of us aren't that wise. So we throw away money on cheap tools, like 1 x 30 belt sanders... which are underpowered and not designed to do what we need to do. Save your money... you'll need it for more files and sandpaper.
And once you get the basic shape knocked out, you'll probably want to do a "scandi grind". Yeah, doing a full flat grind takes a lot longer and is SO boring while you're still in the files and sandpaper stage... but trust me, that quarter inch scandi grind you're thinking of is not going to generate anything useful.
And then once you get it ground you'll want to skip the heat treatment. With that cheap eBay damascus that may not be such a bad idea, but if you had a real piece of knife steel it would be a really bad idea.
And you might even think about breaking out the Ferric Chloride and etching the blade before heat treatment, just because you're anxious to see the pattern again. Slow your roll... the pattern will still be there, and if you etch before HT, you'll just have to sand it down again.
Believe me, you're going to need a lot more sandpaper and files than you think... so stock up. And look carefully at what you're buying. Is the sandpaper appropriate for use on metal?
I got by for a long time using cheap files from Harbor Freight. I never did find a reliable source for really good files, so I still use the cheap ones... the work okay, but they do wear down fast. I have found that the cheap needle files from HF are indispensable. I have about 6 sets of them now. They are great for the detail work, cleaning up mistakes you make with the bigger files. I also use them a lot for carving metal.
That's probably enough for now... but really, avoid the power tools until you've done some work with the files. You'll be glad you did.