May might be good if dry season starts early ! You would be using more 11-12m depend of you weight
No accommodation on the spot you have to commute everyday
take care of with the tide, if low tide during afternoon then your week might be complicated, especially with the wind is better with thermic in the afternoon
For the wind, you have much better in Indonesia: Banyuwangi, Rote and Jeneponto
Only the last one has proper infrastructure but don't know if open yet in May
indonesiakitesurfing.com