I changed my mind. I think I would buy 15 A380 fitted it with 853 seats in economy class (more if it can get certifications from FAA) and 10 A330-300 with 355 all economy seats (8 abreast seat with 30" seat pitch).
I'll start a flight from Jakarta and Denpasar (Bali) to several destinations such as: Singapore, Kuala Lumpur, Bangkok, Hong Kong, Seoul, Tokyo Narita, Beijing, Shanghai Pudong, Hong Kong, Perth, Sydney, Melbourne, Auckland, Jeddah, Abu Dhabi, Istanbul, London Heathrow, Amsterdam, Paris, Frankfurt, and Moscow.
Taking advantages of cheap labour in Indonesia. Flight attendant would get paid around $5 to-$8 every hour instead of the industry standard of $20 or more. Food would be minimal (1 Main Course, dessert, and non-alcoholic drink). The ticket price would be 15% to 20% cheaper than competitors. IFE would be minimal as well (10 movies, 5 tv shows, and free Slow Internet). Free 2 bags with maximum weight of 20kg each.
Pretty nice deal to crush the Kangaroo and Bali's market. Imagine round-trip flights from Sydney to London Heathrow for AUD 1.600, -. Pretty sweet deal eh?
Also, I would start dometic services with 30-50 A321-100 with 220 passengers in economy class. No food, no drink, no IFE, and 1 free bag allowance for 20kg (if you bought international flight within the same booking, you get 2 free bag allowance).