Would recommend FD1 - low ground clearance is a con. The Axio has much better ground clearance. Kegalle roads normally demand OK ground clearance.
Turning into roads which have sharp inclines will be difficult in an FD1 due to the low front buffer.
Also, you may not find good mechanics in Kegalle - even an air filter would be hard to come by - believe me, I have tried servicing my Honda in Kegalle/Rambukkana and it is not easy.
But Axio and Allion both cannot match the Honda driving experience. If you are a person who loves driving, recommend to go for a Honda - I drive the seventh generation Honda ES5 - super car, reliable, and superb ground hugging handling around difficult corners. Despite the downsides I would go for the FD1