I think they mean 5 rooms, not 5 bedrooms.....one master bedroom and 2 bedrooms for children with twin beds or bunk beds in each. I lived in a 1,300 sq ft house for 2 yrs with my husband and 2 sons. My suggestion would be to have an open floor plan for the kitchen, dining area and family room in one large room. Add a bar in the kitchen for casual dining. Be sure to include storage in family room for toys, games, etc. Add a built in desk in eiher the kitchen or family room areas . The master bedroom and bath should be large enough to accomodate a queen size bed and if possible a sitting area (maybe a bay window large enough for for a small loveseat or a couple of comfortable chairs). I would recommend a large walkin shower but no tub for the master bath. Instead have a nice size tub/ shower combo in the hall bath. Too make your house feel larger, use neutral camel, beige, gold or grey paint and carpet through out the kitchen, dining area, family, hallways and hallbath. If you want to add color, limit it to 3 bedrooms. Hanging all your window treatments at ceiling height will make your rooms feel larger and taller.

Do you mean plans for construction? There are many sites on the Internet that will have samples for you. The main issue is that local ordinances require setbacks from property lines and these free samples may not fit what your local building department may require. You can usually access the setback information from your building department online, but a trip down to talk to a planner may be necessary. Start there, finding a house plan that fits within that footprint is the second step.

With your original pictures - I agree with larger rug. But I don't agree with comments suggesting the rooms are monochromatic. They are lively indeed. I think you are just missing some accessories! Art work on the empty walls - even just a single large dramatic piece is in order. In the bedroom on the white wall, in the living space behind the sofa, in the greenish bedroom behind the two beds. Those are instant areas where you can improve. But I think your spaces are lovely and well put together. Also I agree with the comment about table lamps - some of those would really add something, and your coffee table looks so empty - maybe just one gorgeous bowl, or stack some books. These rooms are 90% done in my opinions, just need a few finishing touches. Some of my rooms come out like this because the clients are not willing to pay for those last few finish items or feel they can do that part themselves...

Do they have to be paint buckets? I would think they would not be good for gardening? Maybe others will know more about that. But in the U.S. you can get 5 gallon buckets from some local businesses like bakeries, food store chains, places like those that regularly use items they get in the buckets. For instance a bakery usually gets stuff in 5 gallon buckets and often has to throw them into a dumpster as they can only save so many. Some businesses now sell them for a small fee, maybe 1 dollar U.S. each and some just give them away. I think the cost of shipping them to India would be more than the cost of buying them. You could try setting up a fund on Kiva.org and possibly get enough donations to purchase food grade buckets instead of using ones from paint. Good luck with this project and please update us as to your progress.