Retail stores - 3Ds and some building plans, repeat work

I am growing a chain of retail opticians in the UK. I have been doing my own designs and plans for the builders (electrical/partiton/ceiling etc). I need someone who I can give a floorplan too, with the services marked on, who can put together a pragmatic design.

I have an established product set and aesthetic that I go for, but I am open to ideas on enhancement.

The job will be:
-Design floorplan 2d and receive feedback from me
-Produce 3d render and then review by me
-Produce appropriate 2d plans for construction (partitioning/services/ceiling/furniture locations).
-If capable, produce quantities and specification for material purchasing
-Be available in a whatsapp group to builders to advise on any queries regarding design

I will provide a full (very roughly put together) set of the above for a store I have previously done, to help understand the needs.

Please only take on if you feel confident about all the details above. Happy to do the first store on prices by stage. Then future stores can just be one whole job price.