I will pray that all of the parts necessary come in super early and that the tech is ultra-vigilant on getting out there as soon as possible to get everything installed with NO issues, AND that you have a safe trip home to Nebraska AND make it in time for the granddaughter's birthday party! Whew! That is going to be one long prayer but well worth it!
I would like to think that the Lord is delaying you so that you miss some bad weather or a bad accident and you will have a perfectly wonderful trip home!
Good luck!