Hi,
Nice graphics!
-- What solution are you currently using to place objects? you seem to say you don't know how to do it, but it works in your example
-- Camera work. Do you want some camera movement at all or just a camera that follows at constant height?
In theory, ANYTHING is possible with PlayMaker. in practice, it still requires you to understand the concepts, so wether you do them in c# or PlayMaker, grasping the logic behind what you want to achieve is important. PlayMaker will help you realize that better of course, but complex behavior will require some thinking, trials and error, so don't give up!
Also, don't hesitate to make threads on particular questions, this will help searching and referencing for others to benefit from your learning experience.
Bye,
Jean