$2,000 is very high. Shop some places that paint semis and buses. RV dealers usually send their paint work out them mark the price up. If you can mask off the entire front of the trailer, cover the roof and sides so they don't covered with overspray and provide some scaffold to work off of, maybe you can do it. You will also need a large compressor and a quality spray gun along with a respirator and dust free environment. Materials for a good quality base coat/clear coat paint job will be in the $400.00 range. Or you could paint it with a roller and in the end it would look like it was painted with...well a roller. Like anything, you will get what you pay for. Good luck.
B.O.