I don't want to seem like a busskill, but what's wrong with editing the tibia.cfg file with a script before loading the client? And having shortcuts such as "Paladin, Knight" etc?
1. It takes longer to get your Tibia client going, on a bot forum you should know we all are very lazy people!
2. I don't know how to do it, and got no reason to find the way to do it.