Personally I like to have classes back to back rather than spaced out, and that seems to be the general consensus with people I know. Having one or two hour gaps isn't that useful for study, and I'd rather get everything out the way and then have the rest of the day open to whatever I need to do.
As for having two pracs on the same day. I did it for both semesters and it was perfectly fine.
Tute wise, I recommend having all your tutes on the same day. My reasoning behind this is that by doing so I am only bound to go to uni for two days max. One day for the pracs, the other for the tutes. If I need to skip a day I can do so and all I'd have missed are lectures which I can watch at home. The downside is that if you're forced to skip a tute day you'll need to catch up to four tutes, but I've never had the issue come up yet and there's plenty of other tutes running every day and you can attend if you just happen to run into this situation.
And lastly, you've neglected to add in an EDDA practical to your timetable.