I think your best bet is to "swap" the exercise in the App.  It would be really tough to give the app all of your exercises and have it auto build you a plan as there are so many variations and different names for the same exercises.

But you can definitely swap out exercises in the app to optimize it for the equipment you have.

+1

For dumbbells, would love an option to have the weights in increments of 5lbs vs 2.5lbs as most DB's don't have such small increases.