Benita ... leaving your rig winterized for a long period of time will not be a problem. The RV antifreeze won't hurt the pipes or leave a taste or film.
One thing you want to make sure of, however, is that you have some RV antifreeze in both your grey and black tanks, so that it will lubricate the seals on the dump valves. Also a good idea to have a little RV antifreeze in the toilet bowl, so that seal on the toilet flapper doesn't dry out.
Other than that, you're good to go