Welcome and no I would not drive it any distance as the damage from a blowout can be more than the cost of new tires. Unfortunately you have asked one of the most debated issues... replacing MH tires. Fortunately you are so far past the usual debate about replacing them at 5 or 7 or heaven forbid... longer than 7 years.
I would not wait long enough to join FMCA so you can buy heavly advertised and overpriced Michelin's. Many on here will not replace with GoodYear because of the uneven front tire wear called
rivering. I will not buy Michelin any more because of the poor customer support they had for the early XRV (a MH tire) tires that blew out too often.
As for why Hankook or Toyo are not OEM tires the manufactures know there are some that will only buy American not that Michelin is or only a tire that has name recognition from expensive advertising.
In my 10 years of reading on here I do not remember any posts about unhappy Hankook or Toyo tire owners but I have for Michelin and GY. For what it's worth I have Firestone's on the front and Hankook's on the back of my MH and when it's time to replace I'll go back with the same. Let the tire seller know you will not settle for tires that are more than 6 months old. There is a lot of info hidden in the Search box at the top left of the page and in the right under Class A. Good luck and safe travels with your new adventure.