since you are a member of the the armed forces I think you should get a discount
if you can get the 25K together try and find someone with a dealer auction license and fly up to Pennsylvania one weekend. They have auctions for Porsche's there that are returned for leases. I imagine the discount is quiet steep. It will require some investigating and a bit of legwork to get a licensed dealer but I'm sure at least one of them is a veteran. or you can wait for a good deal on low mileage S to pop up.
My Miata had excellent acceleration from a stop. even with only 150 hp.
I never really liked the styling but I would have found it difficult to part with the overall responsiveness/handling unless I was getting at least another 100 HP. And even with the extra 100 ponies the S acceleration not two levels better than my lightweight Miata. Just one level. When you consider the price difference between a used well maintained/tweaked Miata and a standard Boxster, its hard not to be impressed by the chick car with stupid lights.