My planned project - and some questions

[DCampbell16B]

I will outline the procedure my wife uses (she has quilted for many years and has taught classes). I'll try to keep this in some order. Your project does differ from the usual cotton quilt as your material is much heavier. I'll try to note where that may be important or useful.
1 Sew your blocks and sashing as you wish. Note that whether you make all your blocks and sashes the same size will be important later. It is not necessary, just your preference.
2 Lay down your backing, then batting or fill (if you decide to use it). Both should be larger than your quilt top.
2a My wife uses a special frame to hold these in place. For a one off you might tape the backing to the floor and lay the batting and top over this. She does this on a table for smaller pieces.
3 Pin or baste the three parts together. My wife uses safety pins, 4 or 5 to a block. That's a lot of pins for a one off.
4 Quilt or tie your quilt. You might not be able to make this decision until you get to this point as you have a special top.
4a To quilt on your own machine you need to roll it up so it fits through the machine. You should research "machine quilting" to get an idea if you want go this route. Not trivial.
4b Have someone "longarm quilt" it for you. There are likely people near you who do tbis service.
4c Tie your quilt. This may be the way to go considering how heavy it might be, and how much you might want to do this all yourself. Again, Google is your friend.
5 Now comes the binding, after you have quilted or tied it all together. Trim the excess binding and backing down to the size of the top. Sew the binding to the front of the quilt just far enough from the edge that it won't pull out but leaves plenty of width to finish. Fold it over the edge and around so that you can sew from the back. Doing it this way hides the seam under the binding.
5a Because you have a tape to use for binding you don't have to fold it under in the back if you dont want to. What my wife does, because she uses cut fabric not tape, is sew in front as above, fold over to the back, fold the raw edge under and hand sew the binding down. Tbis way no seam shows on the front. With your tape you do not necessarily need to fold the edge under in the back, or the front for that matter. It depends on whether you don't want a seam to show on the front. Be aware that if you don't fold it under in front, machine sew it down, and try to machine sew from the back, your two seams are not likely to line up.
As far as handling the corners, to make them sharp, just give yourself a little extra tape and fold it into a little reverse hat that hides inside the binding. That's a long way off yet.

Full disclosure: I have not vetted this with my wife.

Good luck and keep us posted!