bali's prolly your best bet of the 3 if its a must for wind
if your up for adventure there's a place at the top of sumatra called banda aceh... u may have just recently heard about it in the media as they just had an earthquake... some euro is about to open a kite centre there in may and if what he says is true on his website then it may be "on" looks like a nice spot too
http://www.aceh-kitecamp.com/en/1 other place which no one seems to goto is vung tau in Vn.. its close to saigon and gets the south west monsoon winds.. the wind is very consistent.. no gusts.. its in a harbour so the water is small chop
for the cost of food(western and local) and accommodation its relatively inexpensive
it has pluses and minus's but overall its worth a trip
but your have to check on windguru(phan thiet) to see the forcast for the week