Udgrade / New PC for MSFS FS9 & FSX

[flymo]

Gentlemen, and Ladies.....a question for you. I'm now thinking of building a new "main pc" for my sim.

Present setup is,

Current main PC (PC1)
Hardware:-
Dual Core AMD Athlon 64 (5200+) at 2,71Ghz
2Gb RAM
Nvidia GeForce 6200LE PCI 512Mb Graphics card
Matrox TH2GO
3x Viewsonic 23" LCD Monitors for outside view
1x 15" LCD Monitor for Cmd & Control.
KB & Mouse
CpFlight MCP and Pedestal units
RSP TQ (motorised)
RSP Rudders
ACE Yoke - rewired with Bodnar card.
Software:-
MS XP Home with SP2 (sys32)
MS FS9 (2004)
WideFs
Client
SIOC
FSUIPC
Prosim737
ADD-ON's, for various airports (Aerosoft)

(Have REX loaded but NOT running.....will want to run this in future).

Second (PC2) runs XP, TH2GO 3xMonitors for MIP, Prosim737 (Instruments/FMC) WideFs, Client, 1xLCD for Cmd & Control.

Ok - what I want to do with the new setup:-

Create a new main PC (PC1)
1. Future Proof to some degree.
2. Change from using TH2GO for visuals (limited stretched main view) to using three projectors for 168-180 degree visual.
3. XP support ends this April 8th 2014, so may change operating system if needed (part of future proofing).
4. Able to migrate from FS9 to FSX (part of future proofing).
5. To be able to run add-on s/w for visual enhancement i.e. REX, Aircraft, AES...etc.,  etc..
6. Online real weather information running on Sim.
7. Use headsets (Plantronics USB) to talk to online ATC.

Two existing PC's will become PC2, and PC3. New PC will be main PC (PC1).
Current main PC (PC1) will become PC2 to run software/hardware from current PC2.
Old PC2 will become PC3 to link to VATSIM & Squarkbox

Question a) - What do you use?

Question b) - What would you recommend?

Question c) - How would you set it up?

Phew!....think that's most, if not all I'd like to do.

Any ideas, and help would be appreciated.

Thanks guys & gals!

John P (UK)