Where does one find the Formica number 58" that ETI talks about ??
Number 58 means matte finish, not the color. There's an upcharge for other finishes. It's all on the Formica website.
Flooring might go with standard ?
Sure.
Do not like the standard upholstery we want a solid color .We have Sunbrella fabric in our boat seems to work well?
Order solid and send it to ETI. They'll tell you how much is needed.
1-A/C Debatable. Does affect resale. If you intend to camp where it's above the 80's in the daytime, I'd say go for it, but the whole topic invites controversy and adamant opinions for some reason.
2-extra insulation and thermal windows Definitely. Cooler in the summer, warmer in the winter, and reduces noise as well. Worth it.
3-larger batteries 2 sixes or one 29 Depends. Are you going to boondock alot? Might want to consider solar, and dual 6V batteries will give you more amp hours.
4-cubby next to bathroom is this an extra for 2017? also is there a medicine cabinet for 2017? Yes, there's a medicine cabinet. Can't speak on the cubby.
5-solar Again, if you intend to boondock, it's quite nice to have. Allows for longer camping periods without shore power.
6-supply ETI with Solid color upholstery As mentioned above. Sailrite is a good company for that.
7-Buy my own Inverter and install one plug for it ? I find it easier to have ETI do wiring. Just me.
8-mag wheels?? Do we really need them ? Mags? Are we talking stock or after market? We got the aluminum wheels and we like them.
9-Tv ready with King Jack antenna If you want to watch OTA TV, and you don't want to fool with wiring. It works well.
10-Storage box in front or buy one or have one made up and install later (metal) Again, a topic that you'll find a hundred opinions on. Our opinion? The best option we got on the trailer.
11-what Decal colors that stay vibrant in summer sun? The graphics supplier used by ETI sells externally suitable "lightfast" or UV resistant graphics - pretty much every color is UV protected. Having said that, keep the trailer waxed and if you have a very clean and vibrant color on the graphics, something like 303 Protectant does well to preserve the color over time.
12-Extra 12 volt cooling fan for Fridge Yes. Anything to cool the back of the fridge area should help the fridge perform better.
Any thoughts Did we get the most important ones?
I'd look at possibly some additional outlets, depending on how you intend to use the trailer. Think about where you'll use them and locate them there. A two-way water heater is handy as well. We like the Captains lights over the bed for reading or just general illumination. When it comes to "additional options", at the end of the day, only you can tell if they are worth it. It's your trailer, nobody else's. Get what's important to you.