When a parent owns a small company, this is a well known situation in which the NPC might not be accurate, and financial aid is often not very good. Getting the financial aid office to give a financial pre-read is a very good idea in this situation. I would keep a paper copy of whatever the pre-read says, and make sure that if this is what you are offered, your parents are fine with paying for a full four years.
Some small companies can have relatively reliable and stable income, and some can have a fluctuating income which depends upon the state of the economy. Thus my “full four years” comment above.
Of my friends and colleagues who owned a small business in the US (or farm or rental property), of the cases I am aware of, I am only aware of one where the student was able to attend a private university in the US without merit aid. In this one case the small company had done very well and the student was an only child, with the result that the parents could easily afford any university at full pay (which is exactly what they did). Several other cases have required that the student either attend an in-state public university, or start at community college, or attend a university with good merit aid, or attend university in Canada.
I am not generally a fan of ED unless you are very sure what your first choice is and very confident that you and your parents can afford it.