Perhaps something like this shade cabana would give you the privacy you desire.

Here is something quick to give you an idea, of course you push the stairs back making the kitchen a bit smaller and it will cut the Bed 2 closet to a normal size, and that will give you a Master Bedroom bigger with a nice walking closet... I didn't play to much with it, the Architect you hire can tweak everything to suit your needs, but if you like the layout, you can take that to him and work of that. Good luck

Mohammad. I understand your program. You may be lost in the details at the moment. Please do follow and trust the advice given here by all these people. You are about to embark on a reasonably expensive journey. Get professional help with someone who you can sit down at a table and brainstorm with them your ideas and intentions. There are Architects and there are professional building designers who are members of the American Institute of Building Design (AIBD) who are well versed in projects such as yours. I personally love a design challenge. After 38 years designing homes and special use buildings I enjoy this type of challenge the most. I am in Ohio and may not be close to where you are but I am sure with a little investigation you will find the best design professional for you.

Dear Mr. Manjunath, It would be really better if you collect quotes from both online/offline professionals. When a turnkey project (Design + Execute) is assigned, overall costs remain low and would be better negotiable with the construction firm. For design only, it depends on the intricacy of work and the BUA of house. Normally, a site visit and a 2D/3D layout without approval assistance would come in between 2.50- 30 rupees per sqft of BUA depending on the firm's category. Regards, Aurum Ideas and Spaces Bhubaneswar