Help with LAN Design & Products (Not For Profit Organisation)

So while its not windy and my busted foot is still mending I am assisting a startup not for profit organisation to set up a new network.

They have been given a donation to buy hardware, software etc. Some of this software is available from Microsoft and Cisco and other partners at a generous discount.

I just need to pic some brains of what is appropriate given some parameters - which I'll post if anyone bites