Not sure what to do about this shot?

I've been trying to do something with this shot since I took it a few weeks ago now.

The problem is that the boards that I use for my backdrops have really begun to bow (which apparently is a problem caused by putting wallpaper on them.

Also I struggled slightly with the composition of this shot, but as it is I really like the end result with the look on my Dads face and his stance etc.

SO I need to decide whether to re shoot or leave it and continue trying to fix it up with Photoshop.

My problem is that a re-shoot may be unfortunately logistically not possible at the moment, and certainly not before the assignment has to be completed, and also I'm concerned that by re shooting I won't be able to recreate the shot as I have it now, which I really like.

Any thoughts would be most welcome.

Unaltered Shot.

So as is evident here the left hand board has bowed quite badly, there is a slight gap at the top of the head as my dad was a little taller than I was expecting compared to the backdrop.and finally there isn't in my opinion enough space to the bottom of the pic.

After Photoshop edit

This is the shot after a bit of Photoshop magic, the bow is now visibly straighter and I've added more space to the top and bottom of the image.

There is a bit of finesse still required to make it print ready but I think it is now a much more usable shot.

Also would it have been noticeable if I had not drawn attention to it?