as you are from the netherlands, wich club are you refering too? If it is the Mach indoor track in Haarlem then i can inform you we don't drive with world GT rules (4Cell or 1S lipo) Our rules for indoor are 200mm pancar 2S lipo or 6 cells with 13.5t. The second club race has just been raced almost 2 weeks ago.
On the Mach outdoor circuit in Heemstede during the summer season we drive pancars with a maximum width of 235mm (pro10) with 2S lipo or 6 cells and a 10.5t .
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edit:
For indoor the 13.5t might be too fast for a beginner.. If you are a beginner then i should wait a little before you drive club races and first train some weeks and get the hang of the circuit. You can always put a milder motor in to get the feeling for it. If you are refering to the Mach and if you are interested in pancars then hop by and we can have a chat.