Investing in Business on OPT and being as Director of the company

[nooneissimple]

Iam currently working as a software consultant in CAP-GAP.My OPT-STEM period got completed,And My H1B will be starting from Oct 1st 2013 and valid till 3 years.
I have few Questions regarding  investments,please help me out if you know the answers:
1.Can I invest in a company during CAP-GAP,it is a C-corporation started 2 months ago?I know the product and iam willing to invest,but any issues from immigration?
2.I am planning to take over 90 % of the company,I mean 80% of stocks would be on my name and 10% will be on another partner (US citizen).Is there any legal issues?

3.Company value is more than 1 million,all iam investing is about 50k,rest of them we are pooling from investors but still shares will be on my name.is it ok?

Thanks for your time and patience.... 

[JoeF]

You could only be a director on OPT if the company operates in your field of study.

And on H1, you can't be a director of the company. On H1, you could only be a passive investor.