If i'm understanding you correctly, you have a light that has a power source coming directly into it. From there, two wires go down to the switch (Black is power to the switch, and White is the power back up to the light.) You have some outlets that come from the light junction box and want to remove one of them. You want to add a second switch so that you can control a fan that you want to add to the light.
From this, it sounds like it is very possible. It sounds like you just need one more wire from the switch(s) location back up to the light/fan. You would use the power from the first switch to jumper over and feed the second switch.
In order to avoid having two power feeds coming into the same switch box, i suggest taking the cable that goes to the laundry outlet, and put it into the switch box. This will gain the neutral as you mentioned and as gregmac mentioned about 404.2(c) requiring a neutral in the switch box. So at this point you have two power feeds in your switch box. Then go to the light fixture and disconnect the power feed that goes from the light directly to the switch box (black wire i believe).
Now you will have your power and neutral in one cable (from the laundry outlet) and then you will have a cable with one wire (white) acting as the switch-leg going back up to the light, and the other wire unused (black).