What kind of work do you do? I have always found it nearly impossible to work part time, but have decided that's more about the type of work I do.

I would go for mon tues Thursday, as people won't miss you on Wednesday, you will get more Monday's off cos of public holidays, and having Fridays off means you always get a long weekend! Saying that though, I love that delicious feeling of being able to relax on a Sunday night knowing most of the world has to get up and go to work on Monday and you don't! So I would consider tues, wed & Friday as choice number 2!