You probably could not get the holes drilled in the exact place needed for the pump cam arm to work properly, and you only have one shot at drilling the holes. I would think doing that and getting it right would be close to impossible for any shop but a pro shop. You can get an electric fuel pump very cheap. But then again, you can get a a regular fuel pump for $35.00 new. Why can't you get a used head from a junk yard there? Or just grab some loaner tools (if needed) and put a new headgasket in and grab any used parts from a junk yard? Why can't you get parts from a junk yard? I saw someone grab a whole engine for $200 here in San Diego. The engine looked fine but when I saw it it had already been taken out of the junked car, never saw it ran.
You can always have the head milled a couple thousandth's for a few dollars on the head that had the blown gasket... if it was realy that bad. That could save you tons of money and work, and it's an easy job.