The advise of an experienced EB-5 and immigration attorney is essential. The timing of the filing of non- immigrant and EB-5 filings is important when you are planning on adjusting in the U.S. It seems that the facts of your case may require you to first apply for a visa at the U.S.consulate outside the U.S.
If you want to stay in the U.S. permanently, then the EB-5 route could work for you. If you plan on returning to your home country instead, then perhaps an E-2 would be better than a B. Either way, discussing your options and goals with qualified immigration attorneys would be beneficial to you.