I wanted 2 go to goa from mumbai for a trip .can any one guide me and let me know many days it will take?

How should i go from Madgaon station . How much time it will take to see the main places in goa . I have only 3-4 days . Is is sufficient to finish the main places in goa . Are the places in Goa chaeap and i am pure vegeterian will i get pure veg foods in hotels kindly suggest and guide me the plan if any one have and plan a schedule for me