ALERINO: In case of short cable (up to 30 cm) - there is only option to attach every connector to its own cable. In case of long cable - it could be better to have one thick cable and on the end to make several branches. But it can be handy to split outputs and inputs to 2 independent branches. Ie, if input and output will be used simultaneously and headed to different devices in different locations.
For good mobility is good small size. Standard RCA or S-Video + RCA cable could fit in bag or could be easy to find almost everywhere. I already ordered 4pin jack for testing and waiting if they arrive and if they will be good.
Anyway. After a while thinking I get to state that better will be to make one thick cable, split it and solder connectors by demand. This way simplifier soldering on the Pandora's end - solder same color on the same place.
Other thing to say. I ordered USB plastic housing (just 5 pieces) to test if it fits somehow. It will provide best housing with minimal effort. Only cons is USB logo, but connector is way different from USB. I can't stay when EXT port connectors arrive
EDIT: Component isn't possible. There is not RGB signals, only S-Video. Composite will be provided by "mixing" S-Video "C" (chroma) and "Y" (luma) signals.