in the above calculator you can get an estimate for your EFC (expected family contribution, federal and institutional methodology).
That is the minimum your family would expect to have to contribute. What each school decides to do with that number and gives in aid you can get an idea of by running net price calculators on the college websites.
The federal EFC (determined by filing FAFSA) is a number that qualifies you for federal grants if low enough. I think maximum Pell grant was $5775 last year for fulltime student per year. Then the state might give grants as well.
When you say instate schools, do you mean the schools in Texas, where you just moved to?
Are you going to be a high school senior when you go back to school in the fall?
Then you need to find out if you will be able to get state aid and be considered a resident of Texas by the time you start college, since your family just moved there.
Where is your sister going to college and what year will she be in?
If you have good grades and test scores it might be better to look for schools that give a lot of merit, especially with younger siblings at home.