My current design requires 7-9 motors, 1-2 servos, 2 cameras and 1 red-dot sight, or something that works similar to or what to use a red-dot.
Wow that is a big list.
Have you ever built robots before if not you might want to start with a smaller design and make it work first before going so big.
First problem I see is how do you intend to control all of these peripherals?? Just using a basic H-bridge for the motors will require a min of 2 GPIO pins per motor or maybe your intending to use a I2C motor controller that has a select able address?? Servos also require a signal line for each servo so this will require another 2 GPIO pins unless your goign to use and external servo driver?? What cameras do you intend to use and how do you intend to talk to them??
You might need to look at using an Ardunio type board to do some of the work and the RPi to be a master