Yes sir, 1700 looks saaa-weet. I'm also seriously looking at a the B350 over the X370 for the not insignificant savings there too. I bit less fluff & I won't miss all the extra LEDs. Crossfire is still possible on the B350 albeit with reduced lanes (which have minimal impact really between x8 & x16), but it's the VRMs that will be the deciding factor and how they affect the OC ability. Waiting on some reviews to see before I commit to a B350 motherboard.
I'll spend the money needed like in this case for an adequate new loop. I do have a penchant for sweetspot priced gear though and an aversion to overpaying for marketing brand or disproportionately priced stuff for epeen. Getting a full water-cooled system for the price of a CPU, and then some, appeals to me.