Regardless of whether it's OPA or other combinations, always strive to do the best you can with GPA, MPA, and PEA. The ones most in your control are GPA and PEA, easy to quantify and measure. MPA is a bit more squishy. My DD says it is surprising why some get Commandant's list and others don't, or are stratted where they are. Just do the best you can in all things. It's not a marathon, it's a decathalon.
Stay off any type of probation - this could preclude you from summer programs.
Make sure to follow instructions - is it #1 through #6 or the other way around (#6 to #1)? My DD said it was strange to have to rank leave, but then again some people have strong preferences/reasons such as weddings or family vacations.
Be a great teammate when you do get jump. There will be about 10 other people who really want those wings and the pink pig with a parachute patch. You can't control the weather, but you just don't want That Guy who will cause all the others to have to return without a jump.
Not related at all, but did you know there is also EI for PE (or at least for her session of water safety/haze)? My DD was in a group of about 7 that validated water safety (haze?) and one of the Cadets went to EI and shared what he learned, and the tips really helped!