May I start please by asking you a question. Do you require south east Asian or white Caucasian models? If you want white Caucasian models then I can supply, mainly female, with a few males available - age range 5 to 12. That would meet your primary requirement, but remember they do cost, over and above photography fees.
Please check my portfolio and you will see a number of examples of white Caucasian models undertaking commercial product advertising and fashion work.
I am the highest rated commercial on this website worldwide and you will get the service you need.
So let's cost this out.
Child model fees are typically USD35 per hour primarily because of chaperones (legal requirement), plus travel. Children under 10 can only work a maximum of two hours in any one session, although they can do two sessions in a single day. My fees vary based on the length of the job. With thirty images per shoot hour, fully edited for web/print, my first two hours cost USD190, the next hour costs USD80, and the fourth and subsequent hours, up to six hours in a day are USD50. So the total daily fee is USD410, plus model fees.
How long it takes will depend on the number of items and I allow 15 minutes per outfit.
That might sound expensive, but that is the legitimate going rate. So assume four hours, two models and me. That's USD 35 x 8 for the models = USD280 + USD320 for me. Four hours USD 600 = USD150 per hour.
Please message me to discuss details. On parle français.