Owning your own home

So my question...

I am in the very early stages of planning our next stage of the renovation, which is converting the old cow shed (16m x 4m) into a useable building, it is currently not water tight, and half the floor is broken concrete, the other half is earth.

Things that will definitely need doing:

1. New Roof, including full structure (will need to be at least semi vaulted to give headroom)
   
2. New floor
   
3. Replace wooden panels on the front with floor to ceiling glass, to let light in, as no windows on the back
   
4. Repoint the whole thing in lime
   
5. Add electrics and plumbing
   
   

The aim is to make this easy to convert to a small bungalow in the future, so will be insulating etc. and all internal walls will be stud, so that is is easier to reconfigure in the future. For now it will be an office, gym and craft room, with a small shower room and kitchenette.

Thankfully the brick pillars give natural partitioning, so office, gym and craft room will all be 2 bays each, and kitchen and shower room will be one bay each. My initial thought was that each room would have its own front door (except kitchen\shower room) and there would also be internal doors to go room to room. I'm keen not to put a corridor in as it would lose space and also block light.

My main question at the moment is how to configure the kitchen and shower room, of the two options below, which do people prefer? Also open to other suggestions...