Well Bob, That's going to be a real challenge. I had one of those when I first started out. Did all the mods. The deflector plates, baffle plates, charcoal basket (hanging from the firebox grate rails so I could empty the ash without removing the fire), chimney extension, even added a temp controller. It all helped but it was still a PITA. I've since removed the firebox and converted it back to a charcoal grill. It works pretty good for that! Like others have said. Start out with the minion method (dump a fully lit chimney of coals on the smoker end, opposite the air intake), dump in a full chimney of fully lit, ashed over charcoal as needed. Oh, have plenty of beer on hand. Good luck!!
If Homebrew & BBQ aren't the answer, then you're askin' the wrong questions... Cheers!!!