I added those newer front skid mount scratchers to my sled last year - they seem like a great design for when the time comes to use them. 

I ordered mine on Dec 14 and these are the numbers.  Nov 20 - #57100 Nov 30 - #60170 Dec 01 - #62324 Dec 14 - #65057

One thing you could do is un screw rad cap on overflow coolant bottle  at idle and see if there is any air in system. Bring system up to temperature then with sled idling remove coolant cap on bottle. Rev engine with break on and see if any air comes out, put cap back on. I have done this on my current skidoo ant it drops coolant temperatures if there is an air in system. Good luck 

My 2020 150T use to run a steady 77C  2024 180R runs a steady 74C  Both machines could run  a fair ways on poor cooling conditions before they would go to the low 80s.   The 2024 have the new style scratchers that mount near the front of the rail. They work really well, are simple and tidy when not in use. Often in poor conditions just drop one on one side. If froze rock solid then both on those rare occasions.   Friend has a 2022 150T Enduro. Occasionally it will spike up to mid 80s even in good conditions. Never determined why.        

Here is what I would do,   New price is $325.00.   if you are insistent on an early bird, I would do as follows:   calculate what you reasonably need to get started, open a 30 day early bird window with a CAP limit on passes, offer only what you need and at what price to get a little something going.   1st come 1st serve. Limit reached, too bad   after that, it’s full price.   OR, have a lottery for a chance to be in the early bird loop.   be like the masters golf