5.0 engine know it all's check this motor out....

First I don't see that "package" making 410hp as it sits....
24's would be fine with that motor as far as injectors go
intakes... pick one most of them are a good match for that out of the box.
Second I'd clarify if the cams & heads are "new" & not used since his disclaimer mentions only piston rings yadda yadda are "new"

Be safer going through someone like DSS