is it just me or isn't that the way a hydro system works anyway. instead of using soil u could use perlite and allow ur watering to come every few minutes. the one down point about ur idea is what happens if a pump breaks down or a time stops working , if u don't see them for days/ weeks at a time u could be in alot of trouble , i would suggest u would leave it till u do have loads of time ,so u can take the time to work with ur plant . also as ur plants grow the amount of watering the need wil increase also the plants will grow and how will u allow for this ?. i am not trying to put u off hear but i think these are a few thinks u should think about before u start.
Ihope this helps
SH:thumbsup: