Update:
When I went to a mates house to get an old case, I was lucky to find he had a case with a removable motherboard tray, which has made things so so so much easier. Brought it home and gave it a wash, smelt of smoke a bit, I think I might spray this as well, because it's got a few scratches and I'd prefer a matte black finish.
Yesterday a lot of progress was made with the shelfuter. I purchased a 600mm by 12mm by 1200mm MDF board (tried to find something better but this will be strong enough.) Bought two long pieces of wood, not MDF board, got some natural stuff for this. It's 1.8 meters by 35mm by 35mm. Also got some hinges, a door handly thing and a padlock (only because it looks epic and when locking it, it sounds awesome).
I cut a piece from the MDF board to make the door, It fits in the door space literally millimetre perfect. I also cut another bit of wood to screw the hinges to. The screws that came with the hinges are about 2mm too long, so I'll use a spacer or 2 to fix that.
I had a huge amount of trouble getting that out after getting it in
I realised earlier that this was kinda unnecessary, but the door has already being cut down a bit to compensate. It doesn't matter too much to me though honestly. To fit the MDF board in, I had to cut part of the chipboard that supports the top right, I cut like 2cm off it to fit in on. I'm not actually using that PSU there btw.
After this I then cut some more MDF board to put to the back of the shelf. This again ended up being millimetre perfect as usual. I then realised I was routing cables behind this, (which I discovered would be VERY VERY difficult to do once it comes to building the PC). I decided I'd get the long piece of wood, and cut two 40cm bits to go to the top and bottom.
This has left a big 3cm behind the wood for cables, should be enough, may even route tubing behind here its so big. I don't quite know why but it looks a fair bit bent, It would be because of how tight it was, this shouldn't be a problem.
Here it is with it screwed together and back in place.
After this, I realised the distance between the PSU and where the door would sit was like 9cm. So I cut another bit from the wood so I could slot the PSU into it and also not have the wires hanging out as they are now. You can also see in this photo the start of the door lock thing
More updates to come later today (this was all from yesterday)