I would say yes - it's not a marginally high altitude - it's IS a high altitude.

High Altitude Kit

Where is the sales center located? Are they used to selling these things at your altitude?

Yes, insist on getting the high altitude jets installed. At 9800', you won't have even close to the right air-fuel with sea-level jets, they'll burn extremely rich. And of course you're going to need high altitude jets for LP, not natural gas.

I did the jet switch on our Monogram gas cooktop, since we self-installed in our "only" ;) 8300' house, and it was a pain but doable *before* actual installation. Hopefully the Wolf is easier, as the Monogram was sort of like playing the old Operation kids game. This was in 2010, so design could be quite different now, I suppose/hope.

Unless you've cooked awhile at altitude, I recommend playing around with boiling and simmering water with an instant-read thermometer, so you have an idea of how much longer/different heat you'll need for recipes. I had a Monogram range down around 5k' altitude and loved the dual-stack simmer burners, but up higher here the same simmer setting on the cooktop never gets hot enough for an actual simmer temp.

Also, "Pie in the Sky" is an excellent high altitude baking cookbook.

Thank you mtnfever. I have gone back and asked that they include the kit on delivery. I have been cooking at altitude for the past 8 years, in a camper. So, even more disadvantage. Looking forward to a full real kitchen.