before you pay off your house consider a few things
how accessible is it if you were limited to a walker, cane, or a wheelchair in the future? could you reach the bedrooms or use the bathrooms? this could determine if this is your forever home or not. if its not, you may want to consider moving, which negates paying it down. you can spend your time looking for the right house and not feel rushed. houses that are actually accessable can be hard to find. lots have upstairs bedrooms, split levels, etc etc. you don't realize how much of an issue it is, till you work in healthcare like i do, or end up on crutches for a few weeks.
also look into any tax credits, local programs, support groups and other benefits you may now be qualified for.
depending on where you live, medical expenses could be a big factor. hopefully you have a mild form and with minor modifications can continue life as is. I would start setting aside some emergency money in case you have any further attacks, medical bills, or have to spend time off work. it will remove a lot of stress during those times.
I would wait 3 months or 6 months till you have a better idea of the whole diagnosis, and see if any life style changes need to be made. Also start putting together some bucket lists and travel plans and go have some fun while its easier for you to.
Good luck