Another vote for Questbridge. Even if you aren’t accepted, you will be glad to have some essays, your unofficial transcript, rec’s and finances ready. And it will help you form strategies.
I also can’t emphasize enough the importance of net price calc’s (already mentioned). A 0 EFC means nothing until you see actual numbers from schools. Our EFC was 0 and the differences in family contributions/student expectations/loans could vary up to $10,000 per year. Also some schools ask about private school tuition and home equity, and others do not. So definitely run them on each and every school.
I hope you will keep coming back to this website, as there is a wealth of info from experienced posters. Our three kids are each on different academic/vocational paths and each one has received excellent advice.