allan - I haven't got a 407 rating but have 1 hour left of my 206 rating having had a similar number of rotor hours as you on R44. The turbine starts were the main focus of training for the first 2 hours (and continues to be!)
Flying is very similar - in fact I still look to pull the carb heat on final!
As the 407 bypasses a lot of the potential hotstart issues I would say go for it and enjoy every second. Having seen a number of 407's in action since getting my 206 I am VERY jealous!
(isn't the grass always greener?!)