Specific Editing People into a Background

[DumbGroom]

Recently some close friends of mine were able to meet up for the first time since 2009 and in all of the excitement, we forgot to take a photo together.
My fiancee was hoping to use one at our wedding of them, and I'm completely lost.
Would you be able to edit these five guys into this background together so that it looks authentic?

Anything that is cropped or adjusted is fine. It's just heartbreaking that we couldn't get a photo together.

Thank you!

 

[Argos]

Being honest, looking at the pictures I knew right away that was impossible to do a decent job on this one, the pictures have different light (direction and tone), quality, contrast, color...everything....
And being almost all of them cut in one side make the distribution harder and impossible to make right, like for fixing light direction for example..

I made a try to see what i can get and in case is enough, i tried to make it look like an amateurish photo overexposed to try to hide a little all the evident mistakes.. but it is what it is..

 

[DumbGroom]

Fantastic! With the terrible photos that I provided, you've done a masterful job. Thank you!