i know what you are saying matey - believe me it has all been considered - it would actually work out cheaper to buy a FRST than do any of the options to turbo it, but its me missus' car, its pretty solid n clean, and we kinda wanna turbo the zetec lump.
FRST loom n ECU aint a problem - i had a mate buy one a while back and he got his arse slapped a bit but since then we have noticed a lot of cheaper looms and ECU's etc. Might go that route yet as it may work out better as you say in the long run!