nice work, it's good to create...
I will need to build a wall and have electrical and plumbing set up
There's no real need for all that, I have 200 micron builders paper and some free standing shelves as 'walls'. Running water is also over-rated. print a few, wash a few (garden hose on spray, I'm sure the neighbours think I'm nut's but who really cares?), print some more. I find that with the lights off all the low budget building materials simply disappear...

have fun.

MattPC