Bar-B-Lew: Upper shelf is 11x23.5 and 5.5" above the second shelf. There's a lot of room where a bigger shelf could be used. It can be slid quite a way back, forward or centered...now that I'm writing this, I'll measure how much extra room later :-)
I really don't know what to say on the smoke. I tend to think I don't have that refined of a palate. However, the pizza had more smoke flavor than I actually would have preferred and far more than any other pizza I've done on a grill. When I ate a leftover burger the next night, I really noticed the smoke on it. The first night, I had salty bacon and pepper jack to distract, but the second night was just some mild cheddar and it was much smokier then I'm used to, but doesn't smoke tend to be a little stronger after sitting a while?
I guess a really good question to ask this group is what is the flavor profile of oak smoke? Researching, it's generally referred to as more mild and neutral, right? I recently used some post oak on my Summit Charcoal reverse searing some steaks. I used chips and probably quite a few too many as I'm used to using chunks there. The wife and I both thought it was a little too strong. Does Oak smoke have a stronger bite than Hickory? Like a milder mesquite or is it really neutral? If it is really neutral, then I think the SmokeFire imparts quite a bit more smoke flavor than all the pellet grills I've used in the past, but it's only 4-5 cooks in.
Until very recently, I can't guarantee I've used much Oak in the past. Before I switched to CookinPellets, I used mostly Traeger. In the center of the US, I really don't have a good way to know if my Traeger pellets originated east or west to know if Alder or Oak. I've never thought anything I've cooked on a pellet grill could use less smoke though.