Fazer at Brands Hatch

[lmdtm]

Getting a second bie just for the track may come cheaper than doing futher upgrades to the Fazer.
Plus, if you upgrade your suspension for the track you'll lose the street riding that you have.
As you say, the best option is to explore what you have and spend you money on track time and training.
When you "upgrade" your riding, you can get a better track bike and take full advantage of it.