Small business with work-from-home setup

I'm trying to set up a small office solution for an office of about 5 people, and I've been out of the loop for a while thanks to military obligations. I'm looking for an efficient VPN solution to a planned (domain/workgroup, haven't decided yet) with NAS, Exchange, and some other server options.

I'm considering rolling with all cisco technology, understanding that it's a pricey solution, as name-brand and PR are just as important as actual functionality to this particular company. I'm considering the Cisco ASA 5505 to incorporate with an in-office hybrid wired/wireless network and IP phones. Anyone have any talking points on that particular product or comparable systems?