fortiauthenticator setup questions

we purchased the fortiauthenticator for two main reasons, 1- to get away from using the Fortinet Single Signon Agent for authentication purposes, and 2 - to use the fortitokens so we can do MFA on forticlient.

we want to do MFA first, is there any problem with setting up fortiauthenticator just for MFA, and later setting it up for replacing the FSSO agent?