Rather than replace the hoses and clamps, you could remove and check them. Verify that the clamps are spring steel: when you squeeze them to the fully-open point (tabs in line with each other) and release them, they must come back to the original dimensions. You do not want heavy clamping pressure from those clips, their purpose is mainly to keep the hoses from sliding off. The hoses themselves should be OK unless they are split, which is easy to check once you remove them.
My preferred diagnostic method with things like that fuel pump is to keep a spare one that I know is good, and just switch them whenever I'm unsure about the one I'm using. Can you get a spare fuel pump from the person who supplied the spare primer pump? Keep the original primer pump too, so you can swap that as well in future when testing is necessary.
So far as fitting a different fuel pump is concerned, I think that would be premature. Personally I prefer not to modify things unless I'm sure the original version didn't work. You don't know yet that the fuel pump has problems, and if it does, you don't know that a standard replacement would have problems. Cobbled stuff is often unreliable, for various reasons.
