Oh wow! That is so exciting! Your pool is going to look amazing when you get home from work. We will need photos! Good work on checking the colour. I wouldn’t pressure clean the trav. Especially so soon after being laid. I’ve heard it’s not so much the stone but the grout that it can destroy. I would also hold off on using any products just yet unless you get the go ahead from Kim’s advisor. You may well find that it comes off with a bit of good rain (not today!) and a couple of good scrub downs.