stranger12
You are not legally allowed to get paid during your hour building! In addition even with a CPL it is very restrictive unless you have an AOC!
So the bad news is, that it is Pay Pay Pay!
"3. is the salary range between 50-150K ( pound ) depending on experience ?"
First do not expect to get anything near that kind of pay in the start. Starting you will be very lucky to have £1500 - £2000 after tax! If of course you ever get a chance of a job!
There are few stories of lucky people who get a job, I would not say your age is any issue!
Rather that you have the preservence and funds to keep you looking for a job in many years to come after spending close to 100K.
If you want an airline job you need to include a Typerating at one stage, that's why expect in total 100K for training.