Conversion in Argentina

but why not just get a single speed bike and not ruin a perfectly nice geared one?
or just ride it geared?
(serious question; i don't see the advantage of converting this).

There are just no new frames available here! This build was planned before I bought this bike, I wanted a decent steel frame, a disc brake and internally geared hub. The best way I could think of to get a decent steel frame for a good price was to buy a complete bike, strip it and then sell the parts I didn't want. Just about the only other option would have been a custom frame, which i would have loved to do, but just don't have the money. I never wanted a nice, classic road bike, just the frame. As it turned out some of the parts will also work with the build I have planned. I really don't think I am going to "ruin" anything, but I guess we will see...

Revert to gears, it has hangers and non track dropouts, it deserves to have them used.
Argentina has an abundance of velodromes so I'm sure track specific bikes can't be too hard to find!

There are track bikes here and I already have one, it is original from the 80s and has an Argentinian frame, hubs, headset, bottom bracket. It is a fine example of what was produced here when they had a good local industry. But for this build I want to be able to run 28c tyres with the option of 32c, this is not going to happen with any track frame that I have come across.