GRC 10 AC Upgrade from 5.3

Hello everyone,

Hope everything is well, and wanted to pick as much information from you all regarding a GRC 1- AC upgrade which i shall be working on, this is my first upgrade from a Security point of view.

Please can someone advice if they have worked on  GRC 10 AC upgrade which will include CUP too.  From GRC 5.3 ----------> GRC 10

What i am concerned on is the following:

Is this a BASIS activity doing an upgrade or is it a Security responsibility?

Must someone be a Functional or Technical person?

I dont know where I start from on this sort of upgrade and how long does something like this takes and whether its a 1 Security and Authorisation Consultants role or is it for 2 Consultant?

Is it simple or will I get obstacles no doubt?

I know GRC 10 has a extraction tool, to move all data in 5.3 into 10, but is it simple as that?

any suggestions will be most welcomed,

thanks

K