I'd suggest a recurve, especially a takedown, for the reasons Pinelander mentioned. I can tell a huge difference between my longbows and my recurves, both while I'm shooting and the day after. Not nearly as many aches and pains in my shoulders after shooting 'curves - even when they draw a good bit heaiver than my longbows!

The effect of heavier draw weights on my arthritic fingers though... that's a different can o' worms.