If money is not an issue:
PCPartPicker part list:
https://pcpartpicker.com/list/y39JJV
Price breakdown by merchant: https://pcpartpicker.com/list/y39JJV/by_merchant/
Motherboard: Asus - ROG Strix Z370-I Gaming Mini ITX LGA1151 Motherboard ($177.89 @ Amazon)
Total: $177.89
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-01-28 23:19 EST-0500
Has WiFi. Right now, only motherboards available are the Z370's, which all allow for Overclocking.
You need DDR4 RAM for this motherboard.