Start by looking at photos on Houzz, and creating ideabooks of what you like, This will help you focus on ideas. Once you are closer, start to plot down spacing and then we can start to better assist you

While change the bathroom fixtures and tiling seems simple those elements account for more than 1/2 the cost of many bathrooms. You can estimate the cost to remodel your bathroom with this online calculator http://www.remodelormove.com/bathroom-remodelling. A budget of $2800 will be tough - it just depends on which fixtures you pick and who does the tile installation. Tile installaton will likely take several days maybe even a week depending on the design and type of tile. You may want to consider other materials like solid surface or engineered flooring that will be less expensive to install

Dimensions are not legible in the plan. Whatever we could make out that is not matching the ones you have mentioned above. Please recheck if the below matches with the floor plan that you shared. Bathroom 1 (brown tiles) - 7.9 ft x 4.1 ft Bathroom 2 - 7.4 ft x 4.1 ft Bathroom 3 (blue tiles) - 7.3 ft x 4.1 ft

Rahul, You may have to change your entrance to the center of the longer wall. Once you are inside the bath in the center will be a basin. On your right will be bath area and on your left will be the WC. This should address your parents concern as well as your wet and dry area concern. Thanks for your kind words, we understand that a home is probably most important possession of any family. Just trying to advise to make the process easier for a few. Thanks, Nitin Cornerstone Designs, Bangalore.