iceman1998:
Thanks for sharing all of this information with the GMAT community. It's quite brave of you. It's probably easiest to respond directly to your questions:
Q: Do admission committees dislike applicants from successful family businesses?
A: No. There are plenty of people who come from family businesses. The onus falls on you to demonstrate your responsibilities and impact. One tricky bit is finding a recommendation from someone who is not related to you or isn't heavily influenced by someone related to you who manages them.
Q: Do admission committees look down upon withdrawals from undergraduate programs?
A: It is not exactly a favorable component, but you are afforded space in the optional essay to justify your withdrawal. The key is about the redemption story. You have to communicate your narrative in a positive way that does not look like you are making excuses or revealing anything too discrediting or damaging. We have worked with many clients who have had major issues but have found artful ways to adequately communicate what is truly necessary for an admissions committee to know in consideration of your application.
The bigger issue for you is the timing of your graduation and your pursuit of the MBA. Even though you will technically be eligible to apply, the schools might think it is best if you wait until you gain a few more years of experience before applying. Why not get some consistency and stability post-graduation? If you wait 24-36 months, you will be in a much better position to gain admission to many of your target programs. You could also even retake the GMAT (even though I am sure you do not want to) to get a 700+ which would help balance out your 3.2 GPA and other academic concerns. If you scored a 680, you clearly are capable enough of doing slightly better!
In general, it sounds like you righted the ship so keep going and I am sure you will find much success with getting into a great program and achieving your goal of elevating your family's business.
Hope that helps,
Admissionado