Get yourself an EGR blockoff plate from ZZP and it'll work well for the EVAP, although when I did my GenV swap on my 98 I kept the GenV's EVAP solenoid.
If you don't have the PCV inlet in the IC, just cap off the vacuum port, and be sure to run a good breather setup. If you've seen Jesse's car, I like to get the push-in 1 1/4" chrome breathers (Edelbrock or Mr Gasket brand), along with a Mr Gasket grommet that has baffles to prevent oil blowout, and drill the oil filler cap for the grommet.
Ensure you have the GenV IC bolts.
If you're reusing the GenIII IC and modifying it, you'll need to epoxy some of the GenV vacuum ports, hold the plate up to the bottom of the blower and you'll see them. Epoxy putty FTW.