Are you being realistic in what features you'll use ?

Are you going to use LC? Will you have the gearbox and diff to cope with it?

How aggressive will the ALS be? 247 shafted turbo, modded throttle body and ISCV for 10 minutes use on the road before you decide you can't use it for fear of either attracting plod's attention or melting your expensive lambda sensor?

Why 8 injectors when you can get 4 that'll do fine at tickover and high revs/max boost for half the cost, without even considering the cost of ECU mods?

If you decide you can live without those functions, then a basic L8 with a wasted spark driver is all you really need for a good power engine.