Considering your WW is unwilling to move to where you are in order to have 50/50 custody and is instead accepting of what was given, that says a lot of where her mind is. It doesn't appear to be on the boys. Maybe waiting for WW to show signs of less selfishness would be prudent before you make big life changes.
I agree with this 1000%
M 10yrs T 13yrs BD #1Oct 2015-PA between WAH and COW BD #2 April 2016-WH resumed PA, she broke it off Jan 2 2017 WH says he wants divorce April '17-Letting go 2018 D busted DD8, DS6, DS3