Jolene,
My dd11 also has ADHD inattentive type and I've wondered about something else in the reading area. She is HG and we live north of Denver. I can't recommend my area for a 2e child. Getting her any services at all has been a huge challenge. 15+% of the kids are ided as gifted where we are (more like 30% at her middle school -- the higher income schools have a ton of GT ided kids), and most of the placement is based on achievement and teacher recommendations. The GT services are a fit for bright high achievers who think in the box but not so much so for divergent kids, 2e kids, or kids who are 2+ SDs away from the mean.
I do believe that the closer you get to Denver, the more options there are, though. Unfortunately, a lot of the options are charters so you are not guaranteed placement. Westgate is one school that comes to mind that has a reputation of serving 2e kids well (
http://www.westgateschool.org/).
I am one of the GCCs for my local Mensa group, but like I said am not in Denver proper so my knowledge of the Denver schools is more limited than the other two GCCs. You may want to try e-mailing the other two to see if they have any other insight (
http://www.denver.us.mensa.org/contactus.php).
Ultimately, I don't think that it is crazy to leave a great school district b/c great school districts often are great for bright kids, but not always great for gifted kids or certainly 2e kids.