RE: 1 pc. vs 2 pc. takedown
I started with a one piece recurve. In fact I've only got one takedown.
I like them all. Like double creek said. Try a bounch and see what feels right. Get out to a Trad event this spring or summer and just try shooting a bunch. I usualy try to make it to Cloverdale (IN) just to look. They have plenty of used bows there. Most people let you take them over the the practice range to fling a few. I think there are a few gatherings that may be closer for you too.
If your used to a heavier bow look at once with bigger risers etc. I like takedowns or some of them but am not a big fan of BIG riser bows, takedown or not. But I shoot selfbows so even a one peice like the old bear Grizzly I started on seems heavier to me.
One other nice thing about once peice bows is there are a ton of older bear (and other) bows out there that are still awesome bows. They can be had for very little around 100 bucks will get you a fine one piece.