Slow your roll, homie...
You gave people 24 hours to respond...no one here is on call, some people actually have to work, too....
There are plenty here to help...just have to be patient a little bit....
270 with pods is way too lean...you're gonna pop that motor as said.
If you plan on running the air box with no lid, 280 to 290...
If you're gonna run a lid, I bet it'd be fine with 270 in there....
With that much desert riding, be sure to get an outerwear to filter some of the dirt/dust you're gonna encounter, they do keep your filters cleaner longer.
Jeff @ FAST sells a tool called a sycrometer. You'll probably have to remove the airbox to sync the carbs, but it will get your sync spot on....
http://www.farmandsandtoys.com/partdetail.asp?partid=59