Hello!
There really isn't a generally 'good' or 'bad' timetable because one timetable is perceived differently by different people. But for me, I'll give you my feed back, of what I would feel following this timetable.
First, many start during 8am. I live in the western suburbs so its difficult for me to get to Mac, therefore I try to make my starting times to the earliest, at 9am. But this may be different to you esp, if you live close to Mac.
Second, its 4 days a week and on Monday you end 7pm. Personally I have a lot of extra curricular activities and it would be far too much to balance this timetable. If you have extra activities, please consider it too, so you can go to and from school with ample time for your activities.
Third, there is large gap between your subjects on Monday. I don't necessarily like this because I don't like wasting time, BUT you most certainly can use this time socialising, or most likely STUDYING. this is actually a gift for study time.
But then again, this is all MY 2 cents. I hope I helped somehow give you an idea of other factors you should consider to get a 'good timetable'
I know it may be hard to change this around, but try your best and good luck if you're still considering it!