You know, it's all new and exciting for the kids right now.
They'll be excited for a while but that'll pass.
And then you'll have sort of what I have -- a situation where the kids sigh about "having to go to Dad's house" (even though it's big and nice) and talk about my dingy little apartment in a marginal neighborhood as "home."
Stuff is exciting for a while. But that's not what kids want from their parents. One of mine says "Dad is never going to love me because he's too busy obsessing about himself. But I'll keep going there because I can talk him into buying me stuff and then at least I get that even if I don't get any love." Sad, but insightful.
They will always choose the healthy environment.