We have purchased 2 RVs with a 5-12 hour drive and plans to camp on the way home. I packed the basics in nesting laundry baskets and big blue Ikea bags. Do not use suit cases, they do not easily stow and will get in the way.
I packed bedding, bath items, and enough kitchen stuff for coffee and to fix simple meals. It worked great both times.
I recommend a french press for coffee. You don't need electricity.
Our CCD was hazard orange too. Not a big deal for a girl who grew up in the 60's with orange mid-century furniture. I found it quite nostalgic.
It is easy to downplay the orange because the first thing you will want to do is store those odd pillows that are only designed to look good in a photo shoot. Then you can go to Ikea and get pillows that compliment the orange. Cheap fix.
Does the 2004 28' CCD have any known defects?
As the owner of three RV's I know there is a never ending list of little and occasional big things to fix. It's a fact of RV life.
The combo tank is not a big deal. Black tanks tend to be over-sized compared to the gray anyway.
If the previous owner has not already added an under-body tube for the slinky you will want to make that a priority mod.
If the tires are the originals you will want to replace them before you come home. I don't care if the tread looks new, replace the tires or risk a body damaging blowout.
Some products that I love in my RV:
Cushy Cupboards Home Page
Don't waste your time and money with that rubberized mesh. It migrates terribly during travel. You will need a blow dryer to relax the sheets and packing tape to connect the pieces for the long cupboards but this liner works like no other.
FoldTuk Kitchenware--Bakeware, Roaster, Space saving, Microwave safe, Foldable, Collapsible, Green
If you have a gas oven these do double duty as bake-ware and food storage. Great for left overs.
Indispensable for tire maintenance.
Tervis Tumbler's Official Site | Insulated Plastic Cups & Mugs | Guaranteed for Life
You are from FL so you probably have these. They work for hot and cold, they do not sweat, you can personalized them, use them in the TV with lids and best of all they are plastic. I avoid breakables in my RV and pool house. Even my French press is all plastic.
Brita Classic Water Filter Pitcher | Brita
This Brita fits perfectly in the refrigerator shelf cutout.