First of all you need to prepare Gothic. I wrote
an article about it in Czech language, but you can easily translate in through Google translate. It's part of
Gothic Modding Wiki, where there are plenty of articles of Gothic modding.
Then the scripts. In Diakreion there is in Tools --> Basic Script Creator, where you can get scripts. Unfortunately I don't support Hungarian language. I might add it, but I don't have any scripts in Hungarian language. If you know where to get them, send them to me, but not anything out of Gothic Sourcer. I don't use GS for such things. GS makes mess of it most of time.
If you don't have Hungarian scripts, I would take English scripts, and either translate them or just make the English mod. For me personally, I would appreciate the English mod, for I don't speak a word in Hungarian, and I couldn't then play your mod. If the mod is just extension of the original game with the original game included, then it doesn't matter, for I don't play extensions.
I must say, I don't understand all steps you described, for I don't understand what you want to do. If you don't have any scripts and you want to use decompilation of GS to get them from original game of Hungary language, it would be hard for a beginner to convert them into normal scripts for the game reparsing, which is used by Diakreion.