comma, "to be honest with you"

Hi,



Am I correct in using a comma in the following?



“I have no idea what you are on about, to be honest with you”



“I’m in gainful employment, so to speak” (A bad example, I know!)



“There are problems with the company, it would seem (I added a comma, as the sentence could read: “It would seem there are problems with the company)



Any help would be most welcome



Thanks