Picked up the CPU, Mobo, PSU, and OS today. So I got all the parts now! Think I'll go ahead and prep-make the build tomorrow for Easter, sans GPU, just to make sure it all works and starts up.
Prices:
i7-8700K $319.99
EVGA 750 G2 PSU: $124.99 ($20 Rebate available)
Asus-Strix Z370-E Mobo $179.99 (change from Gigabyte due to recommendation from another builder and slightly cheaper than Gigabyte board ($20 more at the Microcenter store)
Windows 10 Pro $139.99
I'll do a total in a follow-up post once I figure out the taxes too on my purchases. Current PCPartpicker Prices:
Base Total: $2259.95
Mail-in Rebates: -$40.00
Total: $2219.95