Old Paragon Kiln

Hey guys, I just got started working boro. I have a national torch set up in a soft glass studio. they are going to let me use one of their old kilns, a paragon H-15. it is 230 volt and 21.6 amps with 5000 watts. It has two elements with two knobs that read high medium or low. What is your suggestions to use this with boro? a simple controller box or should i rewire the controller in? I would appreciate any help. Thanks

i have never retrofitted a kiln so my opinion is lacking. i would guess its all about your budget. here's a plug and play option in case you haven't checked it:

http://hotasstools.com/digikiln.htm