can i have my patch create a sub-patch object?

hi everybody,
i'm making a looper recorder which i want to use live in my band,
i'm trying to figure out the most efficient way to handle the buffer(s)
for this, i don't want to eventually be stuck with a fixed amount of
possible overdubs, so i was wondering if its possible to have a patch
load new buffers realtime, or should i just create a gigantic buffer
and record all the sound in that one, then having playback start from certain points maybe? is it possible anyway to have a patch create sub-patcher objects? or do i then need to dig into serious scripting? many thanx.

greets thomas.