ashtrak,
Please, please, please, do not do this job. You obvioulsy have a lot to learn.
First of all, the purple wire nut method has been proven to be as dangerous if not more than the original wiring. This is because the compound inside the wire nut is flammable. Those wire nuts are for TEMPORARY repairs only!
Secondly, EVERY termination in the home should be repaired. If you leave one termination unrepaired, you have not resolved the problem with the aluminum wiring in the home. That could be the one termination that fails. So this now includes all recepts, lights, switches, dishwasher, disposal, water heater, A/C unit, range hood fan, recessed lighting, junction boxes in the attic, and all other terminations.
Thirdly, aluminum wiring is very delicate. If you haven't worked with it before, you must take great care in both stripping and splicing the wire. Even a small knick in the wire may be a point for future failure.
Fourthly, I imagine that you will be attempting this without a permit and given the information above, you will be putting the homeowner and yourself at a great liability if your "repairs" were to fail. Someone could be seriously injured or killed, then if you are lucky, only a lawyer (not a city prosecutor) will be showing up at your door to tell you all what you did wrong.
Lastly, well I won't even get into your pricing strategy.
Please think again about this repair. Let a professional that is experienced in the repair of aluminum wiring upgrade this home.