I work with my local dealership for everything OEM, but I think it's Olathe Toyota in Kansas is handing out good pricing.
Toyota Parts Online | Olathe Toyota Parts Center
As for the PHH, everyone is saying Gates Green Stripe with the constant torque clamps is the way to go now. I have a chunk of silicone hose and the clamps that I bought as a kit and have no problems to report yet, but the science says they weep, so take that with grain of salt.
@cruiseroutfit has the best kits for the axle that I have come across and they offer good pricing on many other parts.
@beno probably has the best skills as far as getting oddball and hard to find items, but he is not taking new Mud customers at the moment because he values his free time and because he has a good client base of people that understand what he is trying to do. There are other great vendors here though, so take a look through their websites to see if you might be better off going with them over just using the local dealership. I will say though that developing a good relationship with your local dealer is worth a lot in my mind. I get 20% off on everything and they don't charge me shipping or restocking if I don't need something I ordered.
For the axle job wall clearance. The axle sections slide out about as far as they slide into the axle housing and then into the differential. The driver's side is a lot longer.
EDIT: Buy the inner axle seal driver that I mentioned earlier. Once you do this job, you will understand why it's so important to get that seal set in there in a new spot on the axle shaft. I am now second guessing all the work I did when I did my axle because there seems to be a bit of grease building up. It doesn't seem like it contains any diff oil, but I am not 100% sure and the thought of ripping everything back open to get to the seal just isn't something that I am looking forward to. I am not experiencing any symptoms, but I also don't know how much grease is normal to be expelled past the felt gaskets and I have my eye on it and I am internally coming to grips with the fact that I may be doing the job over because I didn't get that seal in there quite right. It's a sinking feeling, like knowing your best girl is going to dump you, but you don't know when yet.