Nuke Mask & Green Screen Composite

I’m preparing a short class assignment in Foundry Nuke that blends precise masking with solid green-screen keying. The raw plates feature people shot against green, and the final brief asks me to integrate them cleanly into a new background while also isolating certain areas with animated masks.

The activity consists of placing the actors’ actions into the provided environment. That environment must be reflected on the car’s bodywork. The composition has to be believable.
On the other hand, the VFX of the gunshots must be placed on the rifle’s barrel. This effect must also be reflected on the car, just like the rifle, and the additional light on the bodywork should be noticeable when the shot is fired.
Additionally to this, because is a class project, I can only use the nodes my teacher has taught me, so in the project only these nodes can be used:
- Read - Reformat - Shuffle - premult - Grade - contactsheet - LayerContactSheet - Roto - Crop - Corner Pin - Transform - Blur - Write - Tracker - Saturation - Ramp - Keylight - Color Correct - Primatte - Ibk - Merge
The activity must be completed using a project he gave me as a template, with all the project settings already stablished and the teacher's nodes order, and the result can't be very advanced, as it is a college activity. When the activity is done, I would need the nuke project (or the .nk) rather that the video itself.
I would like to know the price and if it can be done in 48/72 hours approximately.

I would also know if it would be possible to record the process while doing the activity so I can look at how to do it in case my teacher asks me.
Also, if a node that is not on the list is needed, I would like to ask you to please warn me when using it so I'm aware of it