The main piece of missing information that annoys me is that part of the network service list that says "-- and some more." Half the services that were listed could be easily outsourced to any decent ISP, with cost depending on security, storage, and SLA requirements. ISP hosting or even colocation services give you cheap access to better redundant Internet links than your office will ever touch.
The other half could be done with a cheap firewall/VPN box at each site. In the age of OpenWRT, these boxes often have services like Multi-WAN, DNS, DHCP, SSL, VPN, and IDS built-in. Buy two of those, sync configuration, hook them up to a networked power switch, and script the power to shut off one and power up the other whenever a network service test fails. All that equipment is still less than the cost of a single 1U+ server with equivalent services, and any custom scripting would be for minor convenience functions -- not a service requirement. I find specialized hardware/firmware solutions are far more reliable than software/server solutions. They are also often cheap enough to keep an offline spare handy for emergency replacement.
Even a low-power retail NAS box could be used for complete network authentication, SSH, and SSL data services. It could probably serve an office up to 250 users, depending on simultaneous load -- 50 easy. Slap some cheap (less than $0.10/GB!) TB+ SATA drives in there, and you have multi-TB RAID storage per site, that can be rsync replicated to all nodes. Give each site their own cheap master storage node, replicated to each other. The rsync script(s) could be scheduled or event triggered, as needed. Netgear ReadyNAS boxes can also run Subversion/WebDAV/Autocommit/svnsync.
I'm betting the meat of these services are in that nebulous "and some more" area, and that those service requirements change everything.
Some brand names that carry one or more of the products mentioned above, and can be found in any Fry's or decent online store, without even having to deal with a sales rep:
Netgear
Linksys (now sometimes Cisco rebranded)
Dlink
Cradlepoint (3G/4G wireless backup!)
Apple (Airlink are surprisingly good routers!)
Qnap
Thecus
Sans Digital
Digital Loggers, Inc.
APC
I wouldn't ever recommend Buffalo, and 3Com might be on the list if HP had not bought them recently.