With you there mcgoo,
eg City of Bristol College, (this is a few years back).
1 A level (1 year intensive course)= 3hr lesson once a week from 1900-2200
3 a levels= 9 hours a week, (outside normal 9-5 hours) + 6 hours home study. total 15 hours
normal working shift 0900-1730 (ish-if you're lucky) Mon-Fri= 40 hours
total 55 hours.
So not only does this not interfere with your money saving work plans, it leaves a whole 113hrs a week to do whatever the devil you like!
P.S, Not a slight by the way, just letting you know its totally possible!
PPS, the operation of large (or in fact any) aircraft is not reccommended for a large part of said 113hours as, dependant on physical conditioning you may require some sleep/rest time during this period.