You essentially need all the bits off an M40 1.8 motor (wiring loom, ECU, injectors, AFM etc..) to make this work without too much hunting for bits like a custom ECU, MAF etc. Mounting the CPS should not be much of a problem even if the mounting point you refer to is not there. Mounting the bits like TPS, throttle body etc involves quite a bit of fabrication. It would definitely be a far easier exercise to drop in a M40 with 'box ( the m10 'box will not bolt up properly to the m40), but not half as much fun to do/get the m10 working with motronic electronics though.. I have not personally done this conversion, but I know how it has been done by others, and don't consider it to be too difficult to do if you have reasonable spanner, electrical and fabrication skills.
You don't need to use the front mounted dizzy, the m10 one is utilised purely as a 'distributor' of the spark, all the electrical internals are abandoned and the vacuum/centrifugal timing is locked. You just need to ensure that it is timed so that the rotor is facing the correct pin in the cap when the motronic fires the spark. You can also utilise a wasted spark system and ditch the distributor altogether, or use a m42 ECU with individual coils and other associated wiring and hardware... too many options...