Laufey Needs a MRI

We have 2 wonderful GSPs. We don't hunt with them, they are just our little fur babies. Thorium is 5 and Laufeyson is 16 months. We have had 6 ER visits in the last 3 months, 4 of those visits are because Laufey, our younger one, is having seizures. We took him to the ER after his first one, labs came back normal, they thought maybe he was just a little dehydrated, and told us to take him home, observe him, and see how it goes. He had another within 18 hours, both lasting 3-4 minutes, tonic / clonic in nature. They put him on seizure meds, gave us a medication to stop clusters of seizures, and we made a neurology appointment. Neurology went well. Again, everything looked normal and he was good for about 6 weeks. Then he had 4 seizures in 12 hours. The meds weren't stopping the seizure activity and that resulted in an overnight ER stay with IVs to keep him calm and stop the seizures. There was another neurology appointment. They doubled the dose of one of the meds, added a second medication, and a nasal spray to stop the seizures.

Because he is so young and we are not having the best of luck with the meds, the vet wants to do an MRI to rule out a more serious neurological or auto-immune condition. Since he must be sedated for the MRI to make sure he stays perfectly still, it is going to cost $5000. After the ER visits, and with our first child coming any day now, we are asking for help to get the tests we need to know how to best take care of our little guy.