Good Scale Second Plane
Yeah.. sure you'll have your own interests. If you wanna run low-wing warbirds, go with the chipmunk right away (trusting the poster that it IS easy to fly - since on a 2nd plane that's still a concern).
If you're into bipe's and scale, I have read the new GP Tigermoth .60 is a great flying bipe. Pretty and priced decently.
If you want BIG warbirds (you want your own B-29) I would suggest that as about a 9th - 13th plane after you can fly a piano with a big Byron on it. They're not especially hard to fly, or so I'm told - but there's more to the hobby than just the airborne stuff.
Note: I fine GP ARF's outstanding. I've built my share and recommend them. Others, however have their preferences. I don't think any of the recommended ARF's or kits out there will really be a problem.
Scale finishing is it's own world. I suggest a cub because I've seen them with REALLY well detailed BIG cockpits. Not just some plastic instrument panel... No... front seat, back seat, internal wiring, headsets, even the internal reinforcement. Other planes can be detailed, too - but I like the open space in the cub... it gives you more room to work. A plus when getting started.