Would this work?

I'm going to be doing an outdoor grow. If I use a smaller pot (cutting out the bottom of course), and place it on top of a dug-out hole in the ground will this create any kind of "root-boundness?"

As long as the roots can grow freely it should be fine, just fill the hole with top-notch soil though. Grew using burlap bags, roots grew through bag in soil.....prepared soil ahead of time with a couple of handfuls of lime (under bag) two weeks before planting.Plants finished nicely and in early stages bags were easily moved if plants were too shaded.

Thanks.