First, I would have taken the June LSAT so that when it came down to retesting, I could have done it in October and still hit the early admissions deadlines. I honestly believe that if I had submitted all my apps by early November, I would have gotten into at least 1 or 2 of the schools that WL/rejected me.
Second, I would have trusted my own instincts about my qualifications instead of letting LSD psyche me out. When I started the law school admissions process, I believed I could get into at least one T14 school on the strength of my work experience and writing ability. But after a couple months on LSD, I doubted whether or not I could even make it into any Tier 1 school - so I applied to 15 schools, half of which went completely out the window the second I got accepted to Northwestern in February. I don't regret applying to 15 schools, I just wish I would have set my sights a little higher and spent that application money on a couple other T14 schools instead of places like OSU, Indiana, Wake, etc.
I also believe that my lack of solid LOR hurt me at the schools where I was rejected/WL'd. I had 1 from a professor I barely knew and hadn't talked to in 5 years, another from my neighbor who happened to be a math professor at Penn State, and one from a guy I worked with 10 years ago in college. I don't know what I could have changed about this though, because I couldn't announce my law school plans to anyone at work so far in advance, and this is the only job I've had since graduating from college 6 years ago. I really needed some solid LOR from my professional colleagues who have known me for the past few years, but unfortunately it was out of the question.