guess your doing hydro, which i am not to familiar with

however, cloning i know a bit about

where are they
what medium are you using to clone in ?
oasis cubes/plugs/other
or do you just have them in water

seems like a ez-clone machine would be the best solution
or just soak your oasis cubes well before you leave

how many roots could you have developed of a cutting in 7 days
they must be only little pops

if your hydro system wors to the equivalent of an ez-cloner than you might be ok to just do what your saying.