Ask HN: Close Facebook account but keep managing Facebook pages?

I want to close my Facebook account for multiple reasons, but I need to keep managing / administrating some Facebook pages. There are also Facebook groups I'd like to keep participating, but I guess I could rejoin them.

What's the best way to keep handling the Facebook pages? I need to create another account (with my cell phone number, unfortauntely), set it as admin and then delete my original account? Is that going to cause a problem? I can't risk losing the admin of these pages.