/diy/ - Do It Yourself

OP Here,
My plan is as follows:
>Get Field
>Get planning permission for house and "security bunker" (UK Planning laws permit this, and you don't need permission for an under 30M^2 floorspace bunker, interestingly)
>Phase 1: Build house with basic groundworks and hookups for bunker
>Phase 2: Turn big, tall barn into workshop and build the 3D concrete printer
>Phase 3: Buy biiig excavator and dig a fuck-off huge hole
>Phase 4: Get pad laid by pouring in a huge amount of self leveling concrete, then a rebar layer
>Phase 5: Print bunker in modules according to print volume of your huge printer
(I'm thinking an inner shell is printed, rebar is fitted, then a separately printed outer shell is fitted. Once in position, the shell is filled with concrete, sealing it and strengthening it. Large counterweight motors could be attached to shake out any bubbles and ensure good internal adhesion.)
>Phase 6: Install modules & backfill with more concrete, gravel, soil, maybe hesco bastion or something designed to work like that underground?
>Phase 7: Install interior environment
(I'm thinking expanding foam like the Murricans use to insulate their flimsy wooden shacks they call homes, then something on top, possibly spray-on stuff - Using lots of ventilation, of course)
>Phase 8:Install bunker barebones like; doors, stair rails, ladders, lifts, electrics, water, ventilation, networking, gas supply, waste disposal, septic tank, generator etc...
>Phase 9: Use the power of the weaponised autism of /diy/ to come help me fit it out (Paid, with toys to play with and beer and stuff)
>Phase 10: Clear out spaghetti and move in. Bring a mop.

This is of course, assuming that I make at least £300,000 in personal profit after taxes this year, that amount is at least enough to get started with the land, house and maybe printer...