If it were me, a lot of thought would go into my system of fuel prep - that's what you're going to be doing regularly if you want to DOW everyday like Wayne or Jan. Playing around with wood gas for fun is different obviously.
Look at Wayne, he's got wood all over the place, tons of room, heavy equipment, sawmill, wood chunker, and two willing family members to help. It still looks like some pretty serious man hours to keep all those hopper full.
The easier you can collect, handle, and create the chunks, the more viable for the long term wood gas becomes IMHO.
That was a big consideration for me when I started considering wood gas. I can get the wood, but it was not secure, predictable or easy. Straw on the other hand was much easier and predictable. If gasification plans work out, I plan to build a small "line" that starts with a bale on a tractor mounted un-winder and ends in a big tank holding 1000's of lbs of milled straw. I could "DOS" for decades with a system like that.