I'm getting ready to replace the WP, & want to go the whole 9 yards - flush cooling system, replace thermostat, & TRY

to replace all of the radiator & heater hoses.
I've spent a lot of time trying to get everything together - seems most places only carry 3 of the radiator hoses - NAPA lists some heater hoses also, & one of the reservoir hoses. Are the reservoir hoses a different diameter at each end, something you have to get from the dealer, or can you just buy regular hose by the foot to use here?
I've also spent a lot of time peering into the engine (while crying) just tying to find & trace all of the hoses. I just don't see how you would get to some of them. I can't even see where the heater hoses go into the firewall, let alone imagine being able to remove/install clamps there!! Has anyone ever managed to get at them?
I've done a lot of searches here, & read a ton of posts on replacing the WP & stat, but didn't see where anyone talked about replacing all of the hoses - just wondering if it's actually possible!!!!
