You lease a leasehack and you finance a financehack. Anything outside of that is purely a passion project like a sports car or a gigantic waste of money.
Is there a reason you prefer leasing to financing in this situation? Lexuses (and Toyotas) are generally reliable and hold their real-world value very well (and often don’t structurally lease well, outside of the EVs), so it often makes more sense to finance them.