One thing I'd definitely would change in that order is the flexible couplings. Those are not suitable in my opinion. Get the lovejoy type, much better. It demands better alignment but offer also better accuracy, less vibration and better speed response. Not a very high cost and easily can be changed to at a later stage if you want to try what's included in your order, but considering the overall costs, I think it is better to do it now, and not waiting.