Filters, Filters, Filters, No one has mentioned filters, I have 3 on my system and still get junk in the last one. I have also found this is the reason most solenoids stick. I would also get a pressure switch for the fuel system (cheap insurance). And don't forget the bottle heater.
you will love that system i ran one for a few years they are set from the factory to run a little rich so they are safe make sure you have a good fuel pump and use some octane booster don't let your bottle pressure get over 950 psi and back your timing up a few degrees I recommend using a fuel pressure safety switch they are fairly cheap and will save your motor if something happens to your fuel system. Oh ya one more thing hang on it will light that HO motor up be careful and have fun