hey
asgopala! I think you have nice stats (GMAT/GPA/WE), you should give it a shot if you can get LoR and essays ready before the R3 deadline.
I talked to Admission Office a while ago, they encourage applicants to apply whenever applicants are ready to apply. From previous threads on Haas EWMBA, someone was admitted on R3 with a scholarship... I think you will have a better chance to receive a scholarship if you wait to apply for R1 (2022 intake), it's not a guarantee tho. That's being said, It's really up to you.
p.s. I am on the same boat except I'm still working on GMAT... (crying)