You're on the right track, but not quite. The CSR points are worth 1.5 Cents each versus 1.25 for the CSP. Since you can now only have one Sapphire family card the Reserve is the one to get.

American Express MR points are also quite versatile with many different partners available for transfer. Transferring to BA Avios when there is a bonus is a great way to increase the value of the points for redemptions on USA domestic travel.