Here are my thoughts:
Will you ever dive cold water? If so, buy a cold water reg now. The price difference between a cold water (environmentally sealed) unit and a warm water unit is $100-$150. Sometimes you can buy an upgrade kit later. Same goes for the octo.
Personally I don't see the point to a console computer which is not air-integrated. I would either go for an air-integrated console computer, or a wrist-mount computer. In reality, I have both and dive both.
Retractor clip - I don't want to sound DIR, but I don't think that these are necessary. I tuck my console into my shoulder strap when diving.
BDC hanger - good stuff.
That is one very large BC! Personally I am not a fan of integrated weights and prefer to have a weight belt. The very large size of the BC will make it difficult to travel with - are the majority of your dives going to be within driving distance? Would you consider a smaller BC or plate and wing so that, on those instances when you do fly to a dive spot, you don't have to rely on rented gear?
Everything else is, well, fluff. Make your decision based upon what will keep you alive in the water: regs, BC, and computer.