I am not sure anyone can be sure. But here's mine. I got 163V 168Q 4.5W and am studying in one of those T10 OB programs. Some schools have a higher historical mean (e.g., Wharton), but in my program there are people with lower. I believe it should be enough to not get desk rejected if its above 90th percentile. Regarding grades, it should not be an issue if improved (I dropped out of college with a GPA in the 2's before going back). Make sure you have awesome LORs and with your experience you should be good. T10 are always a crapshoot (e.g., I have someone in the program with 2 LORs from industry).