I am looking at buying a tractor to do some commercial shreeding. Basically running an ad in the paper and mowing vacant lots, etc. I was thinking anywhere from 5-7 foot but am unsure what size tractor I need for these. I definitely don't want to be underpowered and have problems as I need to mow quick in order to make money but at the same time I don't want to spend any more money upfront on a tractor than I need too.