If you have mainly done mid to late summer routes in the enchantments, then maybe early may would give you a whole new feel to a familiar area. There are many routes that are best in may that may be new to you. With the added benefit of better than west side weather. Also would not need a camping permit and road should be clear to TH.
Beware that they are extending the permit season (and starting a month earlier). :-(
"The limited entry FEE permit requirement has been expanded in 2016. Limited entry FEE permits are now required May 15 to October 31 for overnight trips. Since demand for overnight permits exceeds supply, a lottery is held annually. For more information, visit the Okanogan-Wenatchee National Forest webpage. "