You are wasting your time with that small of a cabinet. Your light (if using a decent mh/hps) will be what 8"-1' tall? that leaves 2.5 feet left and your plants need to be about 18" away from these lights so....just not tall enough I would say even with a SCROG grow.

Further more, using twist ties to train your plants is not the same as a SCROG where you allow the buds to grow through the spaces in the screen, which in turn allows more light to all parts of the plant.

But, to answer your question, yes you can train your plants to grow a variety of ways, provided you have the right setup for it. Training can be done with anything that can tie the plant/branch/etc. in the desired position, doesn't have to be ties. Just remember the plant is always searching for a way to grow towards that light.