I wish I better understand the legal ins and outs of libel, or it is my personal opinion that John Baird may be mentally defficient

I wrote a few paragraphs about John Baird, but I'm worried that if I post it, it may be libel. Are there any lawyers I can send this to for a free opinion before I post? I'm happy to preface every sentence with something like "It is my opinion that . . . "

It's so hard to write about what the guy is doing without descending into a complete rant.

I will try and remove the nasty parts this afternoon, and form a cogent, non-malicious explanation of why I think John Baird is a complete turd. Oops, this is hard!

Jake