if i was to do the update the manual way, would verizon still send me a notification asking me to update or what?
Probably not. The current OS version is likely checked before the download of the update even occurs. Google is well aware that updates can be "leaked" in this manner, and they would certainly be smart enough to code the OTA updater to check the version before wasting the bandwidth to push a 10MB file. It probably becomes available based on the MEID of the device; but if you already have it they're not going to initiate the push. Sort of like the way an update for Windows won't show up in the available updates list once it's been installed.