Thanks for that info and choosing the Apple Support Communities. It sounds like you want to setup your new iPhone without applying your iCloud backup, but then restore your iCloud backup later. To do this, during the setup process on the iPhone, choose the option to "Set Up as New iPhone" on the Apps & Data screen.
Set up your iPhone, iPad, and iPod touch
Once you're ready to apply your iCloud backup, you can follow these steps to do that process:
Restore from an iCloud backup
On your iOS device, go to Settings > General > Software Update. If a newer version of iOS is available, follow the onscreen instructions to download and install it.
Make sure you have a recent backup to restore from. Go to Settings > iCloud > Storage > Manage Storage, then tap a device listed under Backups to see the date and size of its latest backup.
For information about backing up manually now, see Back up your iOS device to iCloud. If you don’t see a backup you expected to be there, see the Apple Support article If iCloud Backup couldn’t be completed or you can’t restore.
Go to Settings > General > Reset, then tap “Erase all content and settings.”
From the apps Apps & Data screen, tap Restore from iCloud Backup, then sign in to iCloud.
Proceed to “Choose backup,” then choose from a list of available backups in iCloud.
iCloud: Restore or set up your iOS device from iCloud
Cheers!