I would like to agree with Curtis; the Allouette that we flew in the med was a lovely machine to work with. Like him I can't really comment on operating costs but can confirm that spares are difficult to come by and may be expensive due to that. Max vne if I remember was somewhere around 110 kts but you would have to check that. Watch out for the floor mounted Emer fuel cut off right next to the engine governer/throttle!
Why not get a Scout, much more fun?
Curtis, send me a PM, sure we should know each other.