Without doing the math, I'd say you might be cutting it close. Here we're good for 34,000 between a pair of axles (trailer) as long as you have 40 feet I believe it is between the next set of tandems (truck). As you well know, you don't have anywhere near the length with a tag trailer and you're already down an axle on the truck. I have my book around here somewhere, let me see if I can fish it out for the axle group ratings however they may differ from where you're at.
Go hard, go fast, or go home