Welcome to Jayco Owner's Forum from New Hampshire.
Nice camper, congratulations. I've been searching for replacement furniture too and notice some people have selected replacements from Lippert, RecPro, Ikea and even modular furniture... (such as Linsy Home). Some folks just get their furniture recovered. Here's a video (I think it's a Precept too)
https://www.youtube.com/shorts/-Q15rDAm3i0
I've seen the U-Dinette removed and replaced with a couch on youtube. I'm not sure what we're going to do but this summer we will be replacing our furniture. I'll post photos of before and after. If you decide to make a change, please post some photos too... I suspect many would benefit from the info, I know I will. Best of luck.