My drill press is a floor stander and remains thus. The TS however is on a custom cabinet I built many years ago. I built the plan found in ShopNotes. There are many more plans available now vs. the early 90's.
If you just want "wheels", then build a shallow drawer your TS "feet" will sit inside and locate the wheels right below the feet. Use a large dia. polyU "tire" for ease of movement and to prevent hanging up on floor debris, expansion cracks, etc.