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

Maximize the space under your staircase with smart storage solutions! Install shelves, cabinets, or drawers for an organized look. Create a cozy reading nook, a mini home office, or even a pet-friendly corner. With creativity, this often-overlooked area can become a stylish and functional part of your home!

where do u stay... if ur really interested in changing ur kitchen in a spacious manner.. pls consult us for the same.. i will make more use of space with necessary electronics gadgets to be placed along with other necessary food items... Because whatever is the square feet we get in kitchen.. the fridge space and the sink space is dead to use, sink below space will be used for storing dustbin and fennel bottles,etc to store.. etc.. and if u dont have space for washing machine then that also will be used in kitchen if there is no space anywhere.. so basically make a list of ur requirement for anyone to work on it, so that they will give their best ideas on it..

Basically what i can understand now is priority is given only for vastu and other aspects of the design has been forgotten. My opinion would be redesigning the spaces along with vastu integration . A single idea of modification would not be feasible here. Please consider setbacks and other utility areas needed outside the residence as well ,for services integration. Thanks