I don't plan on having A/C in my TD, but have read a lot of posts where people have had problems.
A lot of people avoid front mounted units because driving rain tends to find its way thru and around them. You should plan to make a travel cover for yours; one that seals against driving rain.
Another thing to look out for is that most modern A/C's keep some of the condensed water in the pan so that the fan can splash this up onto the condenser for efficient operation. You will need to add a provision to drain this water prior to travel (but still allow it to accumulate in use for proper function) otherwise it can slosh out and get on your bedding.
A Simple/Rimple was on my short list when I first got started doing this. If there is ever a second build for me it will be simpler.
