Car Advice - Sell and buy again ? or stay as is

[Ej74]

Current Fleet as follows :

09 GTR
04 Alfa GT
07 Locost 2.0 Pinto

What would you do ?

1. Keep fleet as is and keep enjoying
2. Sell Locost invest money in GTR for track days
3. Sell all cars and upgrade commuting car and buy a better track car

Opinions welcomed