Was thinking of driving my family from Chumpon to Kanchanaburi early July 2014. Can't seem to find car rental in Chumpon. Any ideas? We will be coming from Koh Tao by ferry and then hoping to get a car and stop on the way at Phetchaburi and Tha Ka floating market. Is this worth doing or is it just much easier to get a train via Nakhom Pathom to Kanchanaburi?