After 20+ years sitting outside, restoration has started with fuel

Need to finish setting up my profile! 87 LX Mustang SSV police car. Engine bored 0.030 over but mechanically stock other than that, converted to mass air with Ford EEC and wiring harness, shorty headers into off-road H-pipe and Flowmasters, Tremec 3550 with Pro 5.0 short-throw, aluminum drive shaft, "new" 3rd member with 3.73's, poly bushings throughout, poly engine mounts, KYB shocks/struts, Ford lowering springs, Lakewood uppers and lowers out back, and that rusted fuel pump was a 155 lph unit. I quoted new because all of this work was completed 20 years ago. Then I moved and put it in storage. I've been busy for a while! Now I want to make it my daily driver, at least when it's too cold or wet to ride my Softail. Hard fuel lines look fine on the outside, but so did the fuel tank!

Already ordered new tank, hangar, pump, sending unit, rubber fuel lines, fuel neck kit, basically everything at the rear of the car plus the hoses from the hard lines to and from the fuel rails. Should I also replace the hard lines? Or is there a chance they're okay? Don't want to blow rust into the injectors, though they may be shot as well. Stock, old and sitting for a couple of decades.

I don't see the pics I attached when I first posted, so here is what I found yesterday...