nice!
don't feel too bad on the expense, if you decide to sell your Boxster it will go quickly. That's good nowadays because there are a glut of good Boxsters for sale and every little mod counts to raise interest.
P.S.
I recently detailed my friend's yellow 911 and we used a cheap spray wax by Duragloss called Aquawax. Best result I have ever seen on yellow. Looks dripping wet. Yet it's only $8!!
you can get on their website or at NAPA.
http://www.duragloss.com/product.asp?pid=272
Once it dried I used FK1 425 spray to ward off the pollen and dust that finishing sprays often attract.
http://www.fk1usa.com/products-consumer.htm