SW or Not?

[mfdrookie516]

So i have been looking at these beautiful sw tanks on here since i joined... i have no experience at all with saltwater, i have only had freshwater for 2 months now. I have become extremely addicted to the hobby in the last 2 months and now i want a sw tank. I love the look of coral and my fiance' loves (and i mean LOVES) clownfish... she also wants a starfish that she found on craigslist. How much money will i need to splurge on a saltwater setup? i have three 55gal tanks, i have several types of hob filters and a fluval 305 and 405... what would you guys recommend doing? i know i want to convert one of the 55's, so what all will i need to get? would it be better to wait and get some more experience or will i be ok with the knowledge i have picked up so far? just curious, probably will be a month or 2 before i will even have the money, etc... i may possibly getting a 75gal so if i get it, ill have to set it up as a sw... any help guys?