My wife is also particular fond of the pec fly and ab crunch, which are included on many of the home gym systems.
if you are hell bent on not using heavy free weight exercises and only want to do things like the above, you wont get much help here as these sorts of exercises and routines made up of only isolation machine bullshit are not popular on this website for a good reason - they dont work very well. No matter if your goal is to be bigger, slimmer, fitter or better at a certain sport...