Summer Dilemna...

My C++ professor told me today that she wants me to apply for the summer program in the CS department. They are going to be programming robots and she really wants me involved! And she followed that by telling me I'm a good programmer. So I am completely excited by this prospect. The problem is that the program takes ten weeks and I don't know how much money I'll make. It's a forty hour a week position that pays roughly $6.50. But I won't get to spend three months with my dad. I will get between 2.5 and 3 weeks off that I can spend with him, but I don't know how he'll feel about that. I have no idea what to do. I think this could really help me get into the program I'm interested in for grad school. I have no idea what to do....Guidance?