I have to agree,I go away in a couple of week,even my holidays are planned around my growing,I have clones rooted in the second size cubes,the plants in flowering room need someone to just check trays (auto pots) but you will need someone to watch them un less you have a 100 ltr tank with a drip feed system just to keep the medium damp.good luck dude,I worry like my plants are human kids while I'm away I even phone up at least 3 times a week just to ask are they ok,The problem you have got is if the plants are a decent size before you go it's not the watering it's the light height ,last thing you want is the plants growing into the lights,I got cool hoods ,so at least that makes me feel a bit better about that situation.
The clones in cubes will be fine in a large pot,and just wet them through before I go.
But the plants in flowering room need someone to keep there eye on em,they can grow 2/3 inch a day ,that over a foot In a week.