If you buy it early then I would have it installed and use it for exactly the reasons you mention. But I would seriously consider waiting for the remodel to buy it - unless you have all the kitchen plans in place now, you might find that you want a different size range or different finish when you actually plan out the kitchen. Sales happen all the time.

First, make sure you buy your appliances before any price increase. Second, it sort of depends on how much you want to pay for installation, knowing that it'll be uninstalled in 6 months or so. Finally, you can't change your mind later even if GW users all decide they hate whatever-you-just-picked-out and next year's model is infinitely superior :)

In my case, the range sat in the garage for 5 months because I wasn't desperate to use it and installing it would have meant removal of cabinets below cooktop, aka major demolition. The new fridge was just plugged in (didn't bother with an icemaker hookup) because I was anxious, if not desperate, to get rid of the Reagan era energy hog POS. And the new DW was supposed to sit in the garage, 'til the old DW's leak got out of control...grrr... so both the DW and fridge were test driven.

We installed our new range in our old kitchen and enjoyed it for several months before we began demolition. Since it was going back into the exact same location in the remodeled kitchen it didn't cost anything to disconnect it and move it and then put it back.

At the other extreme, we planned and budgeted for a new fridge in the remodeled kitchen, but kept using the old one through the entire process. And two years after we declared the new kitchen finished* we still haven't gotten around to buying a new fridge.

* It seems to be an unwritten rule that a DIY kitchen is never 100% finished.