Hie Howdy!!!
i've plenty of tour program to share with u as i've been there last summer as well.
first of all i've been to Doi Suthep and after that on the same day i went visit famous temples in Chiang Maisuch as Wat Prasing ,Wat Chedit Lung and ChiangMai Art & Culture Center. For all this you will finish in the evening time.
another tour would like to suggest is to visit the highest spot of Thailand,Doi Inthanon and on the way back visit Hmong Hilltribe Market in this program you will also visit some of the Thai temple here.
you can also go to visit Mae Sa Elephant Camp Home Industrial including;
Lacquerware,Silverware,Silk,Celadon,Teak-wood carving, BorSang Village to see cotton umbrellas and paper parasols.
The rest 2 days you can enjoy waterspalsh season which will occur during that period of your visited in Thailand.
I hope this would help you plan ur trip more smoother.
Cheers!!
HALOWENA