As you may know, I went with the walbro 255lph-High pressure model. I may have went strictly on word-of-mouth in getting this one, but I can assure you it was much easier installing the in-tank model as opposed to the in-line HRC one.(I think the HRC pump is actually a Weldon model) I've heard that fuel line problems can arise from using an in-line model. In addition, as loud as the in-tank one may be(not very), I've heard the in-line one is much louder without anything impeding noise emanation such as with an in-tank model. Further, the Walbro's reputation has been well-documented within the DSM community. Consider using the Supra TT pump as a quieter higher flowing alternative as well.
When doing the install with an in-tank model rather than the in-line one, merely use the instruction to the tee from HRC, save for the making of two lines, one from fuel filter to pump and then pump to fuel feed line. Now you'll only need one, a direct feed from fuel filter to the hard stock fuel feed line.
Good luck. Don't stress out about it though. All the fuel pumps should do the job.
Jason 98' Eagle Talon ESi-T Mitsu Super 16g Turbo(HRC)