Just some quick thoughts bro:
1) I would almost always include some kind of test in a cycle. Maybe give propionate a try, as I understand that water retention and fat deposits are less pronounced than with other esters.
2) Not sure if I would put deca in a "cutting" cycle, but I'm not a big deca fan either way, so my opinion is biased. Maybe give Tren or Anavar a try?
3) This is kind of common sense, but you may want to remind your friend that most of his "cutting" will be done in the kitchen, meaning, you can't get leaner eating junk, no matter what gear you're using. This sort of ties into point #1 because using test should help him maintain more lean mass while on a restricted calorie diet.
Just my two cents.