Are you sure they're going to re-verify your pay stubs just to renew the lease? I gotta figure if you're already a pay-on-time tenant, no one at the office there is going to want to bother doing extra paperwork and bullshit just to renew you. You of all people should know, human nature is to be lazy!
I say drop by the office to renew and just sign a new copy of the existing lease with new dates on it. It shouldn't be the full application to rent process.