No offense but I don't think a first time grower should be doing any HST at all. Honestly, not even LST. You don't go tuning a car before you've ever driven one ever at all.
He won't know the plant, nutrient regime, the right timing, won't have the right tools... IMHO, a first timer should grow stuff "naturally", figure out what a normal grow looks like, THEN start trying to mess with stuff after a WHILE - and 420AFs method is just a whole bunch of advanced techniques combined. For a beginner... I mean... do what you like man, I sincerely wish you all the best of luck, but I believe you'd do yourself a favor learning to walk before trying to beat Usain Bolt.
Don't mean to be a party-pooper but a first timer should be starting out gently. This is world record stuff. Just my 2c.
EDIT: KingRatt said it while I was writing, it's really not for beginners. Still, try it if you feel like you're up for it, but don't have illusions of ultra-mega-crops the first time, trying lots of knowledge-requiring methods (just to not kill or seriously stunt your plants) all at once...
EDIT: And to add something more positive as well, as for the question if DWC generally works for the method - I'm trying it for the first time myself. That little plant of mine is still about 2 months away from harvest, in a smaller tent and at 1/4 the wattage 420AF uses, but I'm pretty happy with her - can't complain about any lack of growth, quite the opposite actually, schwazzing her weekly at the moment just to keep RH down (and all the other reasons). Ignore the crappy Amazon under-net lamps, just had those lying around, being useless, giving them a try