You can fit later spec Focus Zetec rods to the earlier Zetec-E 2.0 crank. The rods are longer, but you can get lo-comp later Zetec pistons - with this setup you'll have an even lower comp ZVH (7cc more chamber over the Zetec head).

The good thing is, that the later spec stuff is off the shelf from Esslinger, Focus central etc. so good value for money. I used rods from Eagle, and had a custom set of pistons from Arias machined to fit - 7.8:1 CR. I'm also using a Puma Race head.

You may be able to find an early CGI Zetec-E block, which you could use for huge power output.

EDIT:

Just read you got the forged kit already - so you're halfway there.
Handled? Well we block of 4 oil returns, drill a hole for the new breather system, block the front breather as it sits behind the turbo manifold, and finally the sump is drilled and fitted with a pipe for the oil return from the turbo. A bit of welding on the engine mount and fitting a RST flywheel to the Zetec crank, and it's ready to be fitted in. Inlet manifolds and injection is the final part - here there are many options.