Interesting, that's a pretty standard setup. Obviously I'm aware of tweaking between cookers of the same type. One of my E20's used to like to run at about 230 and the other would always try to run up at 270. My two WSM's did perform a lot closer to each other until I got an out of round on one of my bases in transit from a comp

Now she has to wear a foil mini skirt
So is the trailer for mounting your Ovals or are you putting a new pit in there as well? I'm guessing you're aiming more at a catering rig than a comp rig?
and for Awesselbaum - no BGE are not the be all and end all. If you want a ceramic, then KJ get great feedback, I've cooked on a Primo and they're fantastic bits of kit. If you're going ceramic then FD is just a luxury, all the ceramics will hold temp well.
On the subject of FD, I'm not a massive fan of the Pitmaster IQ but most of the guys using them really rate them. Several of my friends in the US rate Stokers, but there's been mixed feedback over here. I use a homebrew FD setup which was relatively cheap and easy to build. John has one of mine running his Stumps clone at BBQ Shack and he's told me it runs tighter than a stoker
