@dirknina:
Thank you for your input on the cpu i was looking for a low power usage cpu.
I also wanted a low power cpu so I use an Atom. I figure in 5 years time I'll get a new box.
@dirknina:
For the swicthes i want control so ill go managed just have to decide Netgear or TPlink.
Or Cisco. I have an SG-200-08. There are others in the range. More $ than some of the others but good reputation.
@dirknina:
how many Vlans/ subnets would i need.
Up to you. E.g. you could have all xbmc's on one vlan, all servers on another. Or every individual device on an individual vlan. I have an 8-port switch so I have 7 or 8 vlans, one for each switch, but I only use half. The more you use, the more configuration you need to do. There are ways to simplify this, using floating rules and aliases.
@dirknina:
all my xbmc's and severs would have static ip's, but how would i go and make the privet ones to be hidden from all save for my main work station.
@dirknina:
The 4 access points how would i go and make 1 privet/hidden broadcast and one guest broadcast.
It's all set by firewall rules. You can set aliases for ranges/groups of IP addresses and pass/block ranges etc. This is what I do, to allow certain devices full access, other devices restricted or time constrained access, and some devices almost no access except to one or two IPs. pfSense is very configurable.