I am planning a trip for 2 families (2 adults one 14 yr. old and 2 adults 16 and 20 yr old) arriving in London early morning July 5th and departing London early morning July 12th. WE will start with a day tour of London on the HOHO bus on Sat. then on Sunday head to Stonehenge, Bath, Wells and Glastonbury then Port Isaac to St. Ives. Then head back to London perhaps by way of Falmouth. I have no idea what is actually do-able per day regarding these sites being that this is what I'm assuming is a very busy time of year. Also, is it advisable to travel by train to these places?