OK here are the first results.
From 98 inside down to 78 in 45 minutes.
I think with the addition of a ducting fan (like Tomas suggested) on the cold air side to boost the air flow going in to the camper it will cool down much more efficiently.
The air flow coming in to the trailer is greatly reduced do to 4" pipe. I think with the addition of a fan I will get the performance I am looking for. Tomorrow I am going to try installing a fan at the air conditioner, if that does not give me enough air flow I will move it up to the trailer window. I don't think I will need one on the return air. Wish me luck!
If you want to through any ideas my way feel free to. 400 heads are always better than one.