Those are the exact principles I use to program for my 45+ year-old clients. For them, a “hard” set probably only needs to be an RPE 5-6. I would also prioritise exercises that are easy to do properly and hard to do poorly such as:
- goblet squat
- hack squat
- hip thrust
- pull through
- rdl
- kettlebell deadlift
- bench press with a straight or neutral-grip bar
- incline pressing instead of overhead pressing
- floor pressing
- pulldowns
- chest-supported rows
- cable rows
- machine rows