I live in Iowa. I have been away from the site for a while, but read your post and just wanted to respond. You and your wife are at a point I found to be most difficult...the decision of where to go. Ultimately it has to be where you think your wife will receive the best treatment. I too considered Mayo and U of I. After a lot of researching and consultations I chose the HEI. Personally, I have NEVER regretted that decision. However, you will find others on this forum who will speak equally in support of their provider.
The House does provide a free consultation by sending the MRI. That consultation cinched the choice for me. Even if you go elsewhere, I do recommend at least taking advantage of what they have to say. It's a big decision and getting all the information you can to make that choice can be a comfort.
There are many on this site who will support you along this journey. You have found a TREMENDOUS resource, and I encourage you to pose any concerns here.
Thoughts and prayers