Like EB, I print on glass, but mine is mirror so I can actually see the underside of the print head... makes things nice. I don't use PVA, I use hairspray... a nice cheap travel size of Tresseme. Every 3-4 prints I clean the glass with hand sanitizing gel (it's alcohol), then run a spray to coat the surface. Doesn't take much.
Also, if you go the glass route, get several plates. This will allow you to swap plates after a print to get a fresh plate in the machine. Just another couple of minutes to heat the new plate and your're ready to print. The removed plate can cool on an old towel and for me, the pieces literally fall off the glass when they're cool enough.
if it's not sticking to the kapton, check your bed temp. It should be around 90 or 100. That will make it stick as I know it did when I started.