Just run the installer again, you can change or add mods. There is a config file saved with which mods you selected. Its the same when a new mod pack comes out, run the new install and it reads the config file and updates as needed.
In general it is easy to do mod and I can make it, but there is no much space on the list in players name columns, so for most of players text would be cut.
// Edit: I will to publish tomorrow or the day after prototype for it.