i'm totally for efi, get that done first.
then decide on how you want your power and work out your costs.
i have had cvh and zvh's now and i can't really fault the zvh as such, been reliable and only started getting worn after i chucked 23psi through it for a while (bloody fast).
so now i've decided to go the full hog and build a 2.1 zetec turbo with forged internals still running on megasquirt, probably make it sequential injection though.
ultimately i want it to be more efficient and more potential long term, not that my mk2 fiesta needs much power to propel it anywhere
buy my engine fella just needs rings and it'll be mint for a lot longer