if you don't have research papers and strong recommendation letters don't try for niw

you should have very strong point to prove that you don't need to go through labor certification since  your qualifications are extraordinary and no us candidate has that one and us labor condition won't be affected by giving u green card which is hard to prove practically 

but if you have invented something that is very useful or done some research and have ample evidence to support then only go for ebb-niw