You will not find a 7200rpm hdd in any netbook. Manufactures want to keep the price/power draw low . So they went for a 5400rpm drive instead. BUT there are plenty of aftermarket HDDs you can pick up that you can swap out that are 7200rpm.
you wont find a fire wire port on a netbook as of right now. Netbooks are all made of the same stuff.
You either have to take the bandwidth blow and switch back to usb or buy a laptop