Redesign our house map

we do have our house map in a picture and we plan to modify our entrance and living room for make it more adapt to 7 people living there i need some help to replace the logistic of the house

we are 2 adult and 5 kids

kids are small 11/8/7/3/3 years old

i would like to upgrade the entrance.

I actually have removed 2 walls from the entrance

i want to get an help for better performing a small entrance for so many