That it is a magnificent quilt! If you're drawn to hand quilting it, you should definitely give it a try. You can just do a small section to test it out. If you find that you don't like how it looks or it feels like the process will be more aggravation than you want, you can always rip out that small amount of quilting and go with the long arm quilter option.
Personally, I think that if your quilting (whether by hand or machine) makes the wool objects pop out, that is a *good* thing. I love seeing the focal items of quilt get extra attention via quilting, and your lovely work deserves to get the spot light.