I'd like to say thank you to everyone who helped me with my last question. Hopefully you can help me again...

I had a look at my setup, and the system actually has 70 lamps. That implies that each one likely draws 0.1W (if I understand this correctly) given that the transformer has a Max output of 9W.

I'm having a hard time finding lamps that fit this spec, so now I'm wondering if I could simply change the transformer. Do I risk melting the wires or burning my house down doing something like this?