Time table clashes?

[jf]

Hi there!

This is Jakob from Germany. I'm going to be a fresher this year @ St.A and I'll study Economics AND Philosophy.
I read that I should choose my modules carefully, so that there are no timetable clashes.

I think it's nearly impossible if you do two subjects.
However, I've got two questions:

1) Will there be a clash when a course ends at 3pm and the other starts at the same time?

2) Are 2000level courses really that hard for 1st-years?

My choice so far is:

S1
EC1002 Microeconomics 20
EC2008 Topics in Finance 20
PY2003 Ancient Philosophy 20

S2

EC1001 Macroeconomics 20
PY1101 Introduction to Ethical Theory 10
EC2009 Financial Markets 20
PY2102 The Social Contract 10

I know, I'll see my advisor, but how do I prepare myself if I don't know what modules I will have?