Hi Bruce,
The reason I say take down the lower balls is like I said, you want to get 'practice' shooting the 'money' ball. You want the 'pressure' to build as it would in a normal game with the 7,8,9 or 10 ball, not the 4,5,or 6.
If you make one of the lower balls on the break, then just take down one less of the lower balls. I would do the same even if you make one of the higher balls. It's about how many balls can you run out? Is it 5 , 6, or 7? Where are you comfortable? Once you get comfortable with 5, go to 6, etc.
I would agree. This should help. The thing I would guard against is not ever getting to the money ball. You want to lose to the ghost but you don't want him shutting you out every set, every time. You need to have a goal that is just out of reach. Then when reaching the goal gets 'easy' make it harder.
Give it a try & have fun.
Best Regards,