While I do not have as many children as you, as a fellow owner of small humans, I recommend you offer the week to the x-wife. This gives you the time and space to organize the new place. Not only that but sometimes you just need a break from the high needs of multiple children.
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