flooring, rustproofing, remote start

My dealer in Minneapolis emailed me yesterday and said my 148 XLT Low roof family van was built on Jan 7th - we're now just waiting for delivery to the dealer. I've three concerns now:

1. I noticed on the dealer invoice that was just sent to me, that vinyl floor covering is NOT listed, even though it was on the order print-out that the dealer sent to me in October. This isn't a deal killer since I've waited so long for the van, but....what would my options be at this point? It doesn't seem to me like converting new carpet to a full vinyl flooring would be easy to do (but, what do I know...) Or, do I want to use up the carpet and figure out some kind of vinyl flooring conversion after a year or two?

2. I suspect the dealer will try hard to sell me on fabric coatings, paint coatings, rustproofing, pre-paid oil changes, extra warranties, etc. I usually don't fall for this stuff, but I did buy the 60k oil/service changes for my 2012 F150 - which I later regretted as it was overpriced. Is there anything that I should get? I've seen posts about rustproofing, but couldn't find anything that seemed more than just isolated opinions of local rustproofers elsewhere.

3. I forgot to order the remote start. The dealer says they've got "lots of aftermarket options" - which worries me because I know nothing. All I want is to be able to look out my kitchen window at the van in the cold Wisconsin winter mornings and push a button to pre-heat the van for 10 minutes. Anything to get / not get?

Thanks for any info.
EB