Pick a month, land, add the stops you want and set the nights. You get the hours in the car for every day, five years of rain data for every stop in that month, and a price that builds itself. Copy it as text for a Reddit sanity check, or send it to Indika. The planner is free; you can ignore the car.
Sri Lanka is not A to B, it is B, C, D. Tap the stops you want in the order the road runs, set how many nights you want at each, and the kilometres, the driving days and the price move as you go. Hidden gems sit exactly where they fall on the road, so you can see what one really costs you before you commit.
Nine ways into the island: pilgrimage, gems, tea, craft, wild elephants, birds, legends. Tap one and its stops join your route above, priced the same honest way. Guides and tickets are arranged with your booking, paid only after they deliver.