Retrofitting Deckel FP4ATC

Hello!
I currently bought a used Deckel FP4ATC. Now the want to retrofit it. I am going to document my journy and hopefully is going to be successful. It would be nice if someone could help me a bit. Thank you!
 

This machine has a Contour 3 controller.
At first i want to move all axis. Then the spindle and at last the toolchanger.
I want to keep the old simens servos with the bosch servocontrolls. I also want to keep the linear Heidenhein encorder. They are still in a good shape and still work. 

A list of all the components on the machine i want to keep to move the table:

Heidenhein LS904
 
Bosch tr15-xa-140-230V
Simens 1HU3071-0AC01-Z
 

The original contoller (in the control cabinet) has 56 Inputs and 92 Outputs. 
I am going to ned an analog Output for the servos and a sin/cos (1 Vpp)u Input for the linear encoders. The servos also have some encoders on them, but these are only for the velocity.
Later i am going to need another analog Output for the spindle.

In my mind i am going to use a mesa 7i80HDT as a base for the daugthercards. For the spindle and the servos a 7i77 and for the linear encoders a 7i85, because that one can read the 1 Vss signal.
For the other I/Os i would use some 7i70‘s and 7i71‘s.

Please correct me, if i am going to make a mistake?