I've read articles of guys that have done this stuff with the cheapest of bikes and either made their stuff, sold stuff from thrift stores and used the money to buy stuff, or they just found what they needed at a thrift store. I'm not looking to race to Kansas. If my butt hurts, then my butt hurts. I'm really just looking to get from point A to point B. I'd probably walk if I thought I could afford to sustain myself for that amount of time. Heck, all of this stuff could get stolen. I remember once in a documentary a guy saying how the adventure starts when everything screws up.
So I don't think I can afford ideal. I just want to know what will work. Also I don't really weigh too much (I think I'm just above an underweight BMI) and I don't imagine I'd be carrying that much weight. I think the most weight would be the bivy tent and sleeping bag.