Welcome to the forum, Steve. I had a smoker like yours and it's a great starter smoker. You can cook some pretty good Q on an ECB (El Cheapo Brinkmann). With less than $30 in materials, you can mod it to hold 225 for 10 hours with little attention. Google "ecb mods" or "brinkmann smoker mods".
A word of caution: if you're going to use a moving blanket for insulation, be careful not to let it contact the firebox part of your smoker - it will burn.
A bunch of Webers