yep, those plants look nice.

there are a few tricks if you cannot be around to water them, like placing the pots on a towle in a tray and using something as a wick (like a peice of rope or a strip of twisted cotton t-shirt) running from a bucket of water to the towle - this will draw water up and keep the pots moist for a week or so. If you can get the temps down a bit more that will help with the water situation too.

watch out for that soil - MJ will use up the fert quicker than the pack says because you're intensively cultivating the plant under artificial light as opposed to a house plant, which grows a lot more slowly - I reckon you should think about mild ferts after two/three weeks, the plant will soon let yoi know if it needs anything. You may want to invest in a PH meter as well.

good luck.