for increasing strength off the chest. on an ME day you can do a Heavy set of Illegal wide grip bench a set of 6 that's really heavy and hard for 7 or you can do DB press for triples(heavy) and pause at the bottom to make sure you go down wide. Incline barbell bench to a single. other things that might help are try more rows, rows, and rows. Instead of how you'd do 3 sets of 8 try 5 sets of 8.
Hope this helped some.