Ground Floor Hall Redesign

I want to redesign only my Ground Floor hall (10 ft × 21 ft, height 10 ft) with the following clear scope:
Staircase Design (MOST IMPORTANT)
Add a compact, efficient L-shaped staircase starting from hall entry side.
Staircase must match the already finalized First Floor plan.
Minimum space consumption, clean circulation, no blockage at main door.
Modern, practical (not fancy spiral).
Door Position Optimization
You are free to shift Room-1 door / Prayer room door / main door alignment if required.
Goal: better privacy, better furniture placement, clean hall flow.
Hall should not feel like a corridor full of doors.
Complete Furniture Layout
Sofa, TV unit, centre table, circulation paths.
Furniture placement must be practical and usable, not just for looks.
Windows & Ventilation
Add realistic window positions based on the plan (can be adjusted logically).
3D Visuals (Mandatory)
I need proper 3D visuals from Ground Floor view showing:
Staircase
Furniture
Doors
Windows
Simple modern style is fine (white / wood tones).
What I already have
First Floor plan is finalized.
Staircase starting point is fixed at hall entry side.
Ground Floor plan exists, but hall needs redesign.
What I expect
Functional, buildable design (not Instagram-only).
Minimum wasted space.
Clear visuals so I can execute without confusion.
Please confirm:
Time required
Cost (including 3D)
Number of revisions included
Thanks.