Yes, a very nice smooth surface. Yes, this is OEM wheels and tires. I have 2 sets of PS4S's and a set of slicks for OEM wheels to finish off. I'll try the wider tires for the first time July 3-4 at Watkins Glen.
They run this track in both directions. Club Motorsports, also in NH, is similar size but has big elevation changes and they run it both directions. I'll be their Aug 7th, but might stay for the 8th and run it the other direction if the weather is good.
Watching the video I'm seeing lots of areas for improvement. There were a couple of corners where their placement of the apex cone had me entering turn to late. I was driving a better line while chasing the red Toyota MR2 - that was fun!