Bluetooth instead of R/C OmniBot- Kiwi Robot

Hi there,
I have just purchased the Omnibot kit, loved the project. Thank you for your great tutorial!
I want to use the robot for research purposes, I am a cognitive scientist at Cornell. To this end, I need/I would like to control the robot via Bluetooth as opposed to R/C. The main reason is that I must control the robot through an app of pre-recorded motion behaviors to run experiments.
My questions are: would you advise to use the current setup with Bluetooth? Would you advise to use another motor shield?
Any input helps. I have with little/no experience in electronics, so I am in the dark
Thank you!