Exams end this Friday, after that, work on the Fastback can start in full swing

1) The floor pan that I have bought has a huge chunk missing from the battery area

Is there anyone in South Africa who sells those replacement battery tray pieces? Or would I have to fabricate something from a Beetle battery tray?
2) What would be the best type of paint to use on the floorpan?
What did Vw originally use? I do not want to powdercoat the pan, don't have the time to move a huge and heavy pan around...
I have access to a compressor etc so that shouldn't be such a problem..