Am i biting off more than I can chew?

Cheers for the comments guys,

            My current bike is a commuter Marin Fairfax which is pretty bad shape which is why I'm looking to make the switch pretty quick as i've not got the room to store two, even for a short period. Would this be a headache to convert and could I buy a kit containing the main components or is it better to source individual parts second hand?