Does buying the paperback on Tues also work for your bestseller ambitions? I’m guessing not as you said Amazon calculate it over a one hour period and you indicated a 1 hour slot in which to buy the Kindle version in order to max out your chances of getting in the list…
If you need the Kindle...
Congratulations on publishing your first book.
Buying the paperback on Tuesday (or hardback - when?) doesn't work for you, I guess? Chucking 99p away tomorrow works for me if getting a print version later doesn't work for you.