My friend got a Framework as soon as it launched, because he was constantly breaking ports on previous laptops. And it’s worked out pretty well for him, since all the ports except for the headphone jack are provided using user-replaceable expansion cards that basically act as port savers. The actual wear on the soldered-in motherboard USB-C ports are much lower.
At that speed Z690 vs Z790 shouldn’t make a difference. You might as well put that money towards Hynix RAM instead.
Not a 13600K exactly, but my system with a 13700K idles around 65W (measured from the wall with a Kill-A-Watt).
System specs:
No context, no budget, no specific links to the particular kits you’re considering, etc, etc
You’ll likely have to power limit either of them unless you have a 360 AIO.
Anything over 5600 CL46 (the officially supported frequency for the 14700K) is technically an overclock. Though most CPUs will do 6000 and 6400 just fine.
Why not just a 5800X3D into his existing mobo?
You can find used or open-box MSI Z690-A PROs for $100-$150. I run the DDR5 Wifi variant with a 13700K and it’s been great.