Hydro is the only way this is possible at all, and only after you get a good reliable system and learn it and work the kinks out.
You can't expect maximum growth this way since you won't be able to keep the light down low on the canopy where it's optimal, they'd grow into the light and get burned in a weeks time if you did keep it low, but once you figure it all out and balance stretching vs light heigh and everything else it should work with only weekly visits.
Maybe you should consider a closed circuit camera or secured internet camera on it, with water level and meters visible by camera as well as the vegetation itself so at least you can see if there's an obvious problem remotely without having to visit in person. Then you could just check in on them that way between weekly visits.