Router for WiFi with Pepwave MT

I have a Pepwave Max Transit Cat 18 with a roof mounted Paresec Husky on my RV. The WiFi inside struggles with streaming devices like AppleTV, considering adding a router to broadcast WiFi inside the RV and turn of AP on PWMT.

Any suggestions on routers that play nicely with PWMT or potential issue with my plan?

I’d simply add an interior access point since the objective is only to provide Wi-Fi capabilities - no routing required (nor desirable, I’d think). To keep things simple and uniform w.r.t. management, you can make the access point a peplink product, e.g., a mini.