'I think you will get a better feel of what you can or cannot...

'I think you will get a better feel of what you can or cannot say once you get over the hurdle of whether you should or should not post.'

and furthermore
I think you will know whether to post or not once you get over the hurdle of whether you actually have anything to say
and more
if you have something secret not to tell then you can always post and not tell it or not tell it and not post it
and
if you continue on this vein, we will begin to think that either you have something you can say but cannot post it, or you will post something other than what you want to say
and
your head might fall off due to its shear weight
cheers