V8 juice is mostly water and tomato paste, with some carrot paste, and a tiny bit of celery and beet paste. And a few minute amounts of other reconstituted pastes.
It's not even close to being like juicing.
IMO it would be better to buy a green drink powder like Greens+. But nothing beats a juicer. I usually throw in 1 lb of any random green vegetable (usually Chinese veggies since they are cheapest for me) and 1 or 2 fruits for flavour (and of course more nutrients). A juicer is a good investment, just expect to spend a lot of time cleaning the damn thing
