Hi Wallace

, i had the exact same upgrade requirements as yourself. They won't upgrade you to 1mb just for the few days until they deliver & set up your NEW Pace box for TV for you.
Read my installation experience on page 59 of this thread, i'm sure it will enlighten you to a few things you will need to do once your box is installed.
I think you will be surprised it's not quite as simple as it may seem. Hope this helps.
Yours
Stan