Rails Ajax Design trick... (to do or not to do.. titq)

I am working on a kind of User ‘dashboard’ having 4 areas to be
monitored: Area1, Area2, Area3, Area4

I would like to have a ‘user_controller’ in charge of the dashboard
(user view and user model)
one controller per area : ‘area1_controller’, ‘area2_controller’,
‘area3_controller’, ‘area4_controller’, each one in charge of its own
partial view and its own model (_area1.rhtml, area1 model)…

initial html display will be done by the user_controller,
subsequent interactions will be handled by the area controllers using
Ajax requests…

never done that before, so I’ll like to know if it’s stupid, difficult,
wrong or the right way to handle such concept…?

thanks for your advices

kad