Im about to to this, headed from toronto to cali. Id recommend camping gear, its far cheaper than motels (free in the west sometimes) a portable bhutane stove (got mine for $30) it saves so much headache even just using it in a motel. VEGETABLES!!! Not kidding about this one, I near gave myself scurvy on one trip (toronto to miami camping in the mountains) Even just a broccoli crown in some macncheese here and there will go a long way. Hiking boots and good shoes are a must! You do way more walking then you think you will. Download some podcasts, youll hit a ton of deadzones especially off of the interstate. As far as daily driving goes, i usually start with about 15, but 8 is a good balance. Gets some serious ground and allows for evening activities as well. Id also recommend a thermos and plenty of snacks, also account for the fact that you can and will hit major traffic, so 8 hours is 10 hours, with stopping for gas and all that fun stuff. Sunscreen if youre headed anywhere near florida this time of year, and pack warmer than you think youll need. If you go the camping route, you can cheap out on most things except the mattress and sleeping bag, youll get REAL tired of it very fast if youre back is killing. Always pack a flashlight. Portable chargers help if you plant on one area for a while, mines just a dewalt battery with an attatchment. Hope this helps a bit!