I think this is the best way to train. I've always thought about every year with a very strict distinction between the 3 months I need to prep for a meet and the "off-season," so to speak. I just don't believe in training that hard without a meet in mind, so sets of 12, sure. No machines though. This is where you should try out new things-unilateral work, bodyweight exercises, odd-implement type stuff, "GPP".