Ah, gotcha. I thought they'd just go underneath or something.

Yeah, after looking at it again it does seem a bit too crowded.

Proposed layout (concept):

The modules are a really good idea! The way they're displayed I don't have much to say on, but why is there so much space on either side of the page?

Could you use that space to fit in the [custom fields, followers, followed by] on the right,

[Modules] in the center,

and [what's on you mind? / activity] on the right? (They would all have their own columns)