OK, I read the whole journal first. Two points: 1. If his wife and children are willing to deal with the financial hardship, I'm not going to say "boo" (even though I might choose differently if it were me). 2. Did he consult a doctor about whether or not this particular method of weight loss would be beneficial, overall?
I ask the second question because when pushing 400 lbs your organs are stressed out just maintaining you, let alone hauling you around for miles and miles every day. It is entirely possible that he will overdo it and induce a heart attack. Also, all that weight is landing on his feet, as he's noticed, since practically every post notes that he has terrible blisters and his shoes are falling to pieces. I think he's overreaching here, and should have set a more reasonable, perhaps staggered, goal. There are "basic training" camps for the overweight would be one option. Or, it was noted that he has a brother in NM. Rather than just stopping there on the way to NY, he should have made that his GOAL. That way he could walk fewer miles each day to start and slowly increase it, thereby going easier on his body until he loses a bit more weight. He would still have been gone for 6 months doing his "mission", it would still make him lose weight, but it would be healthier overall. Given that he is two months in and is only in Arizona, what is going to happen is that he will fail because he set an unreasonable goal, and that failure will ruin all his great motivation.