I have a 1976 OLMO road bike.

how hard would it be to convert it to a horizontal dropout for single speed usage?

also, are there any single speed hubs that are decent that are 36h, or even 48h?

I want a pretty light setup but I plan on running burley wheels.

I ride bmx now, mostly street and light park, and I just can trust those skinny single walled rims that trackbikes and single speeds usually use.