Off campus study - science

[Pandora]

So I guess this is a double barreled question:

- have you or do you study predominantly off campus

- have you done a science degree/course as a mature age student?

I'm seriously considering applying to study a Bachelor of Science majoring in physics. I'd be doing it part time and still need to decide whether to do a math or science minor.
The lab based work you do both at home and in a 3-5 day block per semester.

Kids will be 6 and almost 3 if I start in first semester '12. I also work full time as a sysadmin in IT.

So I'm kinda worried about fitting it in, but I really, really want to do it, it's something I've been thinking about for a good 5-10 years. If anyone has any experience in studying a highly involved/complex course off campus and with a family, I'd love to hear all about it.