Looks good TECH!
A couple things to consider for the OP:
1) Be especially careful installing the fuel tank with those fittings. Your return looks like it will be really close to hitting the front firewall. I know your supply will clear with that low-profile elbow, but I'm concerned about the return sticking out too far.
2) In addition to testing your pump before you install the tank, I recommend buying a fuel line test kit that includes an AN plug and another plug with a Schrader valve so you can pressurize the lines you made. I think I bought mine from Fragola and it was cheap. I tested each line separately to 150psi in a 5-gallon bucket of water to check for bubbles (the limit of my air compressor), and then I connected all of my components (from the hose connecting to the pump to the hose going back to the tank which included all lines, the rails, injectors, filter, etc) and pressurized those to ~100 psi. I was concerned about too much pressure on the OEM injectors. It seemed to have decent leakdown results without any air hissing, so I was confident of minimal leaks when initially pressurizing with gas.
If you don't have a relay kit yet for your pump, I highly recommend the Racetronix FPWH-009 kit. Mine is wired directly to my alternator now, but I believe your Walbro takes less current than mine at boost pressure.
Good luck!
Dave