you should have the yearly maintenance done at the dealership. they do check everything and most importantly it gets recorded in their maintenance log. If you decide to sell it down the road or have it CPO'd, this would help. I certainly wouldn't buy a sports car without all documented factory recommended maintenance.
it won't be too much either as long as you bring in your own oil.
"It gave you amazing satisfaction, but anyone who says he loved it is either a liar or he wasn't going fast enough." - Jackie Stewart on racing at the Nurburgring