Sounds like a plan. I see I also responded previously to you here: Citizenship processing delays - #210 by Lala
I thought we’d have more than enough time between renewals to process the citizenship applications, so didn’t expect to be back with AIMA 3 yrs later and was pretty stressed about how it would work with the properties sold. It was a complete non-issue. As I said in the link,it turns out family renewals are subject to the same condition as the primary ONLY as long as the primary is subject to those conditions.
For children I’d look carefully at the conditions for regular PR. Mine was considering studying outside the EU and being at Uni was a basis for waiving the residency requirement.
Good luck