I would just do the work and put new ones in. They are not that pricey, and you'll know that everything is fresh. I think it would be more hassle to pull the ZX lines and re-install them in the Z than it would be to make fresh ones.
On another note. If your car hasn't been driven in a long time. Get the radiator boiled and pressure tested asap. It's good insurance for about $100.
If This is your first car you have to just build some confidence, dive in, and try things out. If your learning how to work on cars by yourself it's going to get expensive. Your going to fix things, brake them and fix them again, till you get it right. But in the end, you'll be better off for it.
Good luck!