The other consideration is that only the better ones make it to Easyjet and Ryanair etc. You will need to excel in all departments. You need to aim for 90%+ in each written exam, with first time passes in the flying. The critical phase is the MCC/JOC course. If you stumble here, all bets are off about jet flying.
This is best attempted on an integrated course.
Working your way up as you put can be essentially a leap in the dark.
Modular is ideal if you are working and wish to earn at the same time.
Best of luck with the medical