Having said that, I'll also check for understanding.
When you say "tow behind style mower" do you mean a rear finish mower on a 3 pt hitch, or a genuine tow behind mower? In my part of the world a tow behind mower looks like this:
NZ Mowers, based in Kawakawa in Northland's Bay of Islands, has been specialising in the manufacture of reel lawn mowers for over 40 years.
www.nzmowers.co.nz
But I'm guessing you're talking about a rear finish mower like this:
www.landpride.com
I personally like mid mount mowers. But if I had a Grand-L, I think I'd want a wider mower than 72 inch.
What exactly about the property would stop you using a rear finish mower? Is it too rough (in which case a gang mower or a flex mower could sort that out), or is it tight corners (maybe practice would sort that out?), or too much backing and filling?