Thank you guys. I really appreciate your valuable suggestions and congratulations. 

@Monkey :
So i need to file DS-230 for me as well as my spouse, correct ? How about photos ? I believes photos also go with 122 and 230.
Did you do all the paperwork by yourself or appointed any attorney ?

Definitely, I will be keep bothering you. Please keep checking your mail box. Hope you don't mind helping me out 
Once again, Thank you so much monkey for your precise information.