I guess so - those two would help but quite focused on the delts then - traps with the normal rows, rhomboids? what about chest suported rear flies ?
Might give widegrip heavy lat pulldowns a go too - work towards grown folk pullups (will be easier when I drop 5-6lbs of fat!)
na, they'll hit the delts heavily but also really hammer the rhomboids, mid/lower traps etc so don't worry about that. I do all my rear delt flyes lying face down on a bench set to a slight incline.
I would avoid the wide-grip, heavy lat pulldowns for a number of reasons. Firstly, wide grip pull downs are not superior than just medium width for building your lats, and are much harder on the shoulder joint. Secondly, I don't see the benefit of doing heavy weight, low reps to build lats. They respond MUCH better to higher volume.
If you want to build your lats, try this:
-Attach a tricep rope to cable machine.
-do 10 straight arm lat pulldowns with it
-kneel down, lean back and perform ten more reps
-lean forward and perform ten more reps
-lie on the ground clutching your lats and crying.
make sure you really flex the lats at the peak contraction. I mean REALLY squeeze them. That should do it