no, not really.
being in an open relationship isn't good in general. The way you described it isn't how it works, especially with children involved.
Kids need consistency and routine in their lives, i've seen posts and stories about kids resenting and hating their parents for being poly because "they just want quality alone time with their parents, not random people intruding on them." I know being poly is more or less different but it's still kind of the same.
And also, being apart just leads to communication issues. Are you gonna be happy with your partner being away when your kids are being insanely difficult and you're crumbling under the workload? or when you have nobody to help you when you've had no alone time looking after the kids and you're stressed to death? don't bother, honestly.