Chumpae-chiang Mai On Bicycle;where To Spend The Nights?

Hi ! Am planning my yearly bicycletour,this time Chumpae-Chiang Mai.My only concern is to find places to spend the nights;hotels or "lisorts" (resorts).In the cities;no problem,but in between.. If you have some knowledge to share with me,I would appreciate it! Route,in short:Lom Sak-Phitsanolok-Uttaradit-Den Chai (my greatest concern)-Lampang-Lamphun-Chiang Mai.Normaly I cycle about 100 km/day,but depending on location of where I can spend the night,it can of course be more (or less).Usually the cost is between350-800Baht/night.Could be more,if there is no choice....I´m NOT looking for any freebes,just advice would be very welcome! Oh,by the way;I plan to go very soon,,