Wow, that is a lot of work to make a Brinkmann smoke a little tiny bit better.
Use it as you bought it, learn what works and what doesn't. You might have to fight it a bit, remind yourself that if you end up passionate about this, it will be all better when you upgrade in a year or so.
Enjoy all you can learn about smoking meats, temperature control and clean fire are your friends. Read a lot here.
I'm feeling bearish, and I'm packing a Wusthof Grand Brisket slicer from MABA
Whip It Off, Chambers!
"perhaps...but then again...maybe not..."