Great rig! Here's the spec sheet: https://www.heartlandrvsource.com/specifications-2020-heartland-big-country-fifth-wheel-floorplan-bc-3806-rkd-tr43621
Aside from that, here's what I'm including:
-Freestanding A/C unit https://www.whynter.com/product/arc-14s/
-WeBoost LTE antenna https://www.weboost.com/products/destination-rv
-Anderson blocks for the stabilizers
-Washer/dryer combo
-Custom made exterior sunshades
-Mattress by Brooklyn Bedding
-And all kinds of odds and ends!!

I include all these to offset the minor damage and maintenance:
-It's not filthy, but needs a professional cleaning (there's still golden retriever hair in the nooks and crannies)
-Cracked fiberglass on the front end (cosmetic only)
-May need new batteries
-Stabilizer auto level trips breaker - have had to manually level.

Will upload more pictures and/or videos as requested