If you find a private college with 30K annual tuition and 11K room and board and 1K books, and you get 50% off of tuition merit aid (which is not uncommon), that is 27K a year. You can get federal loans each year for 5.5 to 7.5 per year. If you work full time during the summers, you can help cover your personal expenses. You should also check whether you are eligible for a grant from your state, and whether they allow those grants to be used at out of state colleges.
A student is more likely to be eligible for federal pell grants if the family has 2 kids in college at the same time. You will find that out when you submit the FAFSA.
However, note that many public and private colleges charge extra tuition and fees for nursing students during the last 2 years.
Your parents should also get a $2,500 federal tax credit for each of 4 years, which should be able to be contributed to your college expenses. A credit means total federal income taxes are reduced by that amount, as opposed to a deduction.
Colleges may also offer you the opportunity to earn some money at an on-campus job, which is called work-study.