Maps of where we've been-- as requested.

Week 1-2

Bangkok for 7 days, then up to Ayutthaya for 2 days, then up to Chiang Mai for 5 days

Week 2-3

From Chiang Mai to Lampang by Train, then Lampang to Phrae by bus through the mountains, then back down to Bangkok for 2 nights before heading south for some beach time

From Bangkok to Pretchuap Khiri Khan by express train, then down to an unnamed area on a local train to a stop that isn't even on the printed schedule between Ban Krut and Thap Sakae, then a short walk to Sunshine Paradise Resort for 5 days