the only hoses that are required IIRC are the ones for the iacv and the other valve that it's hardline leads to, the line from the manifold to the fuel pressure regulator. the line from the pcv valve can be vented to a catch can or just dumped (dont think thats tech-pass-worthy though) and the same goes for the valve cover blowby vent. if i think of any others ill try to remember.

and if u take things off things have to be capped or welded shut so u dont have massive vacuum leaks.

also the brake booster line is needed too.