Appart is the easy bit..... how are you going to hold it all to TORQUE the nut durring assembly?
Washers in gears, is a good way to have to buy gears... (teeth bust off)
No offence, but if you dont have the right tools... take it to somone who does, or buy the tools...
Clutch hub holding tool is what you need at this point... and a torque wrench, and a crankshaft Jig, and, and , and.