Is 180 achievable with a 173 diagnostic?

I took the new test without logic games, scored -2, -3, and -5 in the LR sections, and -3 on RC. My only previous studies were a diagnostic under the old structure (162, LG tanked my score) and about thirty minutes of practicing logical reasoning. However, I was fortunate in that my -5 section was not scored. Moreover, do you guys believe HYS is realistic for me if I score above 175, given that I'm an international student and my converted GPA will most likely hover around 3.7? (My GPA was amongst the top 1% of historical graduates in my program; however, my school does not do grade inflation)