Wow! A Gephi project! That's not so common, that why I'm bidding on it!
It would be very important for me to know what kind of data you have to analyse please. Then we can discuss on what visualisation you need (spatialisation, sizes, centrality algorithms, etc.)
I have experience in Gephi (as you can see on my upwork profile : Nicolas Rangeon : upwork . com /freelancers/~01b575c10807c27309 )
Feel free to contact me!