The pan will definitely be hot on all sides. Could be a burn hazard under the table if someones leg came into contact.
If you are making this yourself I would do a double layer pan and insulate the heck out of the space between the layers with fiberglass. Also a fiberglass enclosure to conceal the bottom of the pan would help to provide another layer of protection from heat.
The good thing about making your own pan is you will be able to make it hide the propane fuel source.








