I also recommend a custom shop and ask if they will take Michael's coupons to price match. You never know.
If you have a Craigslist around, you may find someone who does it on the side. Be sure to see samples and ask for references. Ask your friends where they got things done.
One thing to remember when framing is to be sure to get non-glare glass. It is extra but you will kick yourself forever if you don't. Speaking from experience here.
That piece is absolutely beautiful.
Watson