Started 3 years ago at age 37 (turning 40 on the 28th) and I've always been atheletic. Raced BMX in the 80's, played football, ran track, skate boarded etc...
I picked up boarding quickly but the first day was pain incarnate. Every inch of my body hurt except for my toes. Wear your helmet cause catching an edge sucks and it will happen.
Your gear looks great. I started with a 159 and I'm 5'8 190.