Car Buying help

[Watti]

ok as some of you know..

I had a VK
i bought that for 900$ put 2500$ into it... then i got an offer for 5000$ for it
so i sold it...

i now have a VR Commodore Ute Electronically limited at 198Kws (im not allowed any thing bigger)

I wanna have a VK again and i want to have a VZ or VY Wagon(bit like Petey's But only for Cruisin no burnouts(gunna have a big Sound system))
i am Also going to buy a Mitsubishi Lancer EVO (10 or 9) For my Girlfriend for her first car when she is on her learners

ok this is on my agenda for a VK When i buy it again

Fix any Damage to the engine
Change the Rear brakes to Disc Brakes
Put a Sound system in the Car (4 6in and 1 12In 500 Watt AMP)
Neons
remove any rust
Limited Slip Differential
Blue Head lights (Lesser glare brighter lights )
New Dashboard(Speedo tacho Fuel Time temp)
Racing steering wheel
King springs on front and back(lower it 2 inch)
New Wheels and Mags (Performance tyres that can go over 240KM/h) Keep the stockies for Burnouts maybe drifting
Change the Gear box from 3Sp Auto to 4 Sp Auto (if i am allowed by Law)
Police Scanner (Shh dont tell the cops)
and lastly a Body kit

to the VY/VZ
Sound System(4-6in 2-6x9 2-12in 800Watt AMP)
Neons
Yellow/Gold headlights
Racing steering wheel
king Springs ultralow Front and Back
Mags and Wheels (Performance max 240Km/h)
Police Scanner
Body kit

ok Which car should i buy first ( i wont be getting rid of my VR in a hurry) i have plenty of cash, but once i get 1 car going perfectly the way i want it, i will sell my VR or Give it to My Friend.

all i want to know is what should i buy first, the VK or VY/VZ( i havnt decided yet it might even be a VT (Excactly Like peteys)