Well done T, sounds like you've pretty much nailed it!
And yeah, you have to decide whether you want to work with your Reason beats as handy midi information, in which case, yes, you have to open up Reason inside Logic every time*, or record it as audio into Logic, close Reason, and basically edit/filter/arrange that audio... so if you want to record your Redrum beats, you can either record all 10 Redrum voices to 10 Logic audio tracks, or just record Redrum's main audio out as one signal to one Logic audio track.
*Another way that you can close Reason would be to export the Redrum midi file, open it in Ultrabeat or EXS24, and try reproduce your Redrum sound there.
Might help to rename your rewired Reason songs with Rewire, RW or something, so you can find them easily, and maybe store them inside the Logic folder, so they don't get separated if you reorganise your music folder...
And yeah, Logic could do a much better job implementing Rewire - when you rewire Reason with Ableton, a) all Reasons controls are listed inside Ableton (not just as generic midi cc#s), and b) there's a small graphic of Reason's output signals from it's hardware interface, so you can see which channels are active ( Why haven't Logic's developers haven't got round to either of those handy and obvious improvements???? )