Thanks for all the replies! I am still a little unsure of what to do however I've got some good positives and negatives to think about. The thought of wearing neoprene for 21 days however does not sound appealing. I hate putting that stuff on! BUT it is much cheaper and easier to use the bathroom. I want to wear something.... I realize I might have great weather but I also might have cold weather and I would much rather plan for the worst. I am also thinking a dry suit might some in handy on some of the side hikes with water or if I get some rain... I am willing to pay for the best gortex suit and get custom if needed. To me its an investment that I can use again, albeit not very often.
Thanks again for all your input. I think it comes down to a personal preferance - just need to weigh the pros and cons. And I have some time to think about it.... only 8 months