Basically, what I'd like, is to be able to calculate a fair value of the bitcoin price based on

a.) real-time order book data
b.) recent time and sales data
c.) manual adjustments or additional algorithms based on historic data or future projections

Then, I would like to be able to put orders into the system in an efficient manner.

Preferably I also would like to have a graphical representation of the order book as well a graphical way to show which orders are mine. I'd also like to put orders in or cancel orders just by clicking on the graphical user interface.

If there is open source software available that does exactly that, or that I can relatively easily adjust to do just that, that would be best of course.