my first jet was a boomerang, which will give you the flight time you need when getting into jets, just because you have flown other models they will not give you the knowledge you need and a boomerang will always be fun to fly and be with you for years I got mine in 2008 and have over 50hrs on it
once you have gotten use to the throttle delay and not having air blown over the wings by a prop then go to a f15,f16 my second jet was a JL 15 and the rest of them are also jetlegend 1/6 f16 L39.
don't be put off by scare stories about arf's from china the good ones have been around for years and have good reps in all country's I personally cannot fault JL none of them are perfect but JL have structurally good airframes and the new lightweight f16 and yak 130 are a huge leap forward which brings them in line with more expensive makes.
I personally have have seen the JL viper jet up close and they fly very well and I am tempted myself but at the moment I am out of space, just keep it light and it will serve you well