User licences estimation of GroupShare 2017

Could you help me someone?
Im finding the best scenario how to estimate the required number of User Licences for GS 2017 which we want to buy.
How many GS User Licences and so called Online Web editor Licences we will need when we have today about 60 Project managers and about 100 suppliers involved into the Studio Projects via the offline packages.
Where for Project management today we have 40 float Studio 2017/2019 network licences and suppliers have their own Studio Freelance licences.

Thank you for some estimation figures or your similar experience with the GS configuration od Licences

Jiri Proniuk