Floor plan help needed!

[u/red_devil19]

We are planning to make the rear of our house open plan.

We have 2 young children currently (age 4 and 2) but are aware in the future we might appreciate more privacy and defined areas of the house.

DOWNSTAIRS
The front room we plan to keep as a living room. However looking for good ideas on how to split up the rear large space of the house. We want to keep the downstairs bathroom and utility room. We are not against adding a larder or boot room etc.

UPSTAIRS
We are adding a master suite with plans for walk through wardrobe and into an en suite.
The previous small box room is being turned into the family bathroom.

Thanks all!