I'm toying with the idea of next year staying for 12 weeks. I've been told I can obtain an 8 week visa here then extend for up to 12 months while in Bali. Has anybody been down this road before? Is there a mountain of paperwork? What is the cost of an 8 week visa if it is available and how much to extend? Do you pay "one-off" or is it so-much per week or month?