How to manage panels on new post page?

Hi all!
I have a number of plugins installed (Dear god they’re awesome), such as rc-custom-field-gui, and simple-tags. But y new post page is quite cluttered now!
Is there any way I can manage the panels, like removing the default “custom field” panel? Also is there any way to set the order that the additional elements from the plugins appear on the page (they are not in movable panels sadly).

Thanks in advance!
~Shiv