Do you feel intimidated into having the other work done?
You can always say "No thank you."
Most mechanics will do something similar.
In order to maximize their profits they will give your vehicle a "free" evaluation.
They will red flag anything that is bad, or even marginally bad.
Don't get mad at them - it's just another way of them trying to stay profitable.
Ask them if the play in the track bar is a slight wear or on the verge of failure.
If they say that it's going to fail soon, then I would ask them to show it to you first.
In regards to the trans cooler lines - are they broken or worn in the middle somewhere?
If they are leaking at the ends, there might be a replacement seal kit they can install rather than replacing the whole line.
Again, ask about the condition and how close to failure they are.
Ask them to show it to you if they say they are ready to fail.
Wheel cylinders often leak. They are cheap if you can do it yourself.
I'd venture to guess that they probably are in need of replacing.
Are you cheap? - maybe
Are you a bastard? - wouldn't have a clue
By the way, it was after many similar situations, that I decided to learn how to do my own repairs.