The link you have posted has all information about required electronics.
By the way there are other very good options in your budget. Have you contacted RCDhamak about availability of Easystar? If easystar is not available then you can buy Shikra from RCForall.
http://rcforall.co.in/product_info.php?cPath=1_17&products_id=357You can send a Pm to
rcforall to contact Mr. Sai and he should be able to help you out.