KS, lots of great advice above.
With the Weber Gold kettles, temp control is a matter of three things:
1) amount of fuel added, if all burning/hot;
2) amount of intake draft allowed;
3) amount of venting, or exhaust opening;
The Weber Gold is no different than the silver for intake or exhaust control. The major differences are the ash catcher and the hinged cooking grate with the gold, and you pay a premium for them. I do see where you could use 2-3 charcoal briquettes in the ash catcher for heating your smoke wood and keeping chamber temps even lower as a result of having the heat that much farther away from the food grate.
The Brinkmann Gourmet is a low-budget smoker/grill...not a bad value, but is a lower quality...light-weight chrome-plated grates, etc. With some modifications, it can handle a lot of hot smoking tasks, though while without mods can be a problem with ash build-up from the charcoal and snuff out the fire on longer smokes. I have one identical to that which you linked above...well, it USED to be identical...heavily modified now, of course. Intake draft control and ash fall-out were the first two things I decided to correct before I even fired it up for it's maiden voyage. I don't use it a lot nowadays, but have no problems firing it up whenever I get the whim...some of my best creations have come from that rig, btw. Oh, and it can be used for char-grilling, I just never did due to being up to my eyeballs in dedicated grills.
Here's the bulk of the mods from the beginning, but I've done much more since I wrote this up, but the main issues to go after are covered here:
Wiki:
http://www.smokingmeatforums.com/a/brinkmann-gourmet-low-budget-mods-how-to-w-pics
Thread with discussion:
http://www.smokingmeatforums.com/t/95616/brinkmann-gourmet-low-budget-mods-how-to-w-pics
Here's something that popped-up in my search which may help answer a few questions you may not yet have thought about regarding the Gourmet (I had forgotten about this until seeing it):
http://www.smokingmeatforums.com/t/81508/wanted-from-ecb-gourmet-users-opinions-on-your-smoker
The Gourmet, being it has a tall smoke chamber, will be easier to keep low chamber temps with small amounts of fuel when cold smoking, and is tall enough to hang shorter sausage links from the upper grate, or with a dedicated sausage mod for hanging from the barrel rim, etc.
Hope this helps explain more about what you're looking at for now.
Eric