It's your quilt do it your way. you might try auditioning with a scrap used in a block and stencil on it, then lay it in one of the areas and stand back. Try a few different ones and see which you like best.

I think I would start in the middle and make a straight line from the center out in all four directions. That would divide the quilt into quarters and and provide anchor. Then depending on what you kind of quilting you have chosen go from there. For example if free motion, work on one quarter at a time or if stitch in the ditch continue to work from center out. I think you should be fine since you glued it.

Spray baste the batting to the backing, then spray baste the top to the batting. I would do a simple design...just a meander, clamshell, or other quick design.

Never use it if it is very stretchy.

if you just have to use it back it with a light weight stabilizer such as pellon.

think about an all over meander pattern. That should hold it together and keep it from stretching. It is a beautiful quilt and I don't usually like animal prints. Don't know why

That is a very pretty quilt! I would stitch in the ditch.

I would SID.

Oh, that's very pretty! No suggestions about the quilting but hope you solve it because this is a really beautiful top!