Optimal scenario
13 hours until Smaru release
24 hours of registration for round 3 final

if you save your borrows you can do 3 borrow runs immediately
then wait for reset and do another 3 borrow runs with 7 hours left for registration end
There will be barely enough time for testing unless you get a god run right away.

If you went full on Tylenol intake you probably had your Seiun parent with everything ready and you can just go ham for 24 hours. And at this point you deserve the free win.