AJAX does not support CKEditor, demanding old FCKeditor & TinyMCE

I like to get rid of 'ugly' error messages on my admin pages, like that FCKeditor is missing, while I have FCKeditors bettered follow-up CKEditor, the latest version, that now for many months is beyond the test state. I have this as a library in sites/all/libraries together with the CKFinder library. It can be used independently by the WYSIWYG module as well as by the CKEditor module.

Then I don't know what I should do with TinyMCE (with similar error messages). Should I install that one as I already have the better CKEditor? Actually I don't think so: TinyMCE versus CKEditor. Not that important, but I think I shouldn't get an error message if I choose not to use TinyMCE. The WYSIWYG module for example doesn't mention all the editors I prefer not to use as an error... OK; it's different because here AJAX has to work with the TinyMCE module instead WYSIWYG working with libraries, but isn't there a way to work around? TinyMCE is a library as well and this could be set in the AJAX admin pages as well jsut like WYSIWYG does, without generating an error message?

Secundary question is if there could be conflicts with using jQuery for certain functions that might overlap this AJAX module and how the architecture is arranged to fore-come such eventual problems?