Your question appears to be simple, but I can't help but provide a detailed response:
What is your main game or games to play?
Reason I'm asking: I own two 1060 6 GB cards and I'm also considering upgrading one of my rigs to a RTX 2060. I also own three 1080p 144 Hz displays, so I'm familiar with what's possible to achieve that performance level. Lately I mainly play Overwatch and Fortnite. If your GTX 1060 is a dual fan, then you could comfortably use the automatic overclocking utility built into MSI afterburner or EVGA Precision X. They will automatically overclock the core, but not the GPU memory.
Display that I own three units of: AOC G2590FX: 1080p / 24.5" / freesync / g-sync compatible / 144 Hz / 1ms response TN panel
https://www.amazon.com/gp/product/B07D377Q6D/
https://www.newegg.com/Product/Product.aspx?Item=N82E16824160350
* note: I paid $189.99 (x 1) to NewEgg AND I paid $199.99 (x 2) to Amazon.
** Personal game settings **
Overwatch: 1080p / ultra / dynamic reflections medium / g-sync enabled (on freesync display)
Fortnite: 1080p / high / shadows off / view distance far / g-sync enabled (on freesync display)
What is your upgrade budget? Were it my money, I would forgo the motherboard upgrade and invest between $90 - $115 into a 16 GB (8 GB x 2) 3000 MHz (or 3200) kit. Why? Your Intel Kabylake platform is dead, meaning discontinued. Therefore I would not invest anymore money into it. Why the 3000 MHz? That way it would future proof your purchase, in case you care to upgrade to the future Ryzen 3000 series (Zen 2) architecture. Check customer reviews and product description to assure that it supports overclocking on Ryzen platforms. If it does then it will almost assuredly overclock fine on Intel based platforms, keeping in mind that your current B250 chipset only allows memory overclocking to 2400 MHz anyway. Your current RAM: I would sell on Ebay and use the money toward a tier 1 quality power supply. I'm partial to EVGA G2/P2 (efficiency) 550/650 (wattage). The prices cycle about every other week on NewEgg, therefore next week would "probably" be a better time to purchase. With that said, what is your current power supply's manufacturer and model?