I think a nice 5-10 gallon dutch pot system would be lovely for a mother plant (you'll want tons of room for roots especially if you keep this plant for more than a year). DWC if not maintained nicely could root rot the shit out of your mother plants. I also could see it being a pain in the ass to change the water on a system like that with a monster plant vegging.
You could do a bitchen dutch pot system for less than 50 bucks (that includes pump, res, and pots price).
HOW TO BUILD It's a really simple construction and you have a nice little bit of water in each pot to keep your plants nice and healthy should anything happen to the pump.