Regarding your first question, don't. It seems high enough to get you where you want to go. I have the same scores as you do and I had interviews with two of the schools you listed (I'm also OB). GRE is a foot-in-the-door kind of a thing - If it's high enough to pass the desk-reject phase, that's enough. Regarding your second question, if you have two very solid academic LORs and the choice is between a professor that just knows you as a student (not an RA) and a boss who has very good things to say about you - I'd go with the boss (unless the professor has warm things to say and is very known).
If I look at my cohort, there are some who have industry experience (mean ~3 years, maybe less). If you can connect the dots (in your statement) between research and your experience in a cohesive narrative that takes the reader through the path to your research interests, you should be fine. If the RA you have done however was not very substantial, I would recommend considering taking a 1 year RAship.