Welcome to Bike Forums Welshy!

As a guy who in your situation chose to convert a roadie: I converted my road bike to fixed and loved riding it so I ended up slowly upgrading components. In the end I ended up just switching to a track frame and moving everything over. Conversion definitely isn't the cheapest way to go if you get the upgrade fever, but then again nothing is. It just helps to have some experience riding a basic FG so you get a good sense of what kind of higher end parts you will want. It would suck to blow a bunch of cash right off the bat and realize that you like a different style of bike better.