Hi Trushali,
as per your manpower requirement you can go with following combination..
With manpower 30,one HR professional having experince in entire gamut of HR will do,
But since you are going to double this size,A seasond HR professional having expirence in all filed of HR,as well as have some knoweledge of legal,plus a recruiter with an experince upto 1 yr in same field will(this will save your manpower cost,and you will get more energatic person).I hope you must be having accounts dept which should be taking care of all financial matter along with final salary processing.
Regards
Alok