And the winner is....
Buoght a WSM 18.5 today at a big box store with a military discount. It's assembled and I've got some ribs on now for the last two hours. Thank all of you who gave advice (like I asked for, instead of insults for how I wanted to make MY bbq).
I will keep the brinkman s&p and eventually fix it up so when I have a real crowd I have more capacity. I get some old stainless steel from work (1/4 inch) that was going to be thrown away with occasionally very thick pieces (1/2 inch) that come from old safe deposit box doors, once I have enough stainless I'll make some mods so I can do it very cheaply. Any precautions I need to take regarding the stainless? A "burn-in" with no meat the first time?