A few things.
1.) All cosplays realism is greatly diminished when they are glowing bright green, or have resin on their blade. So attempt to avoid items, and rings like that.
2.) I think that Robin Hood would be the type to use a rapier or a curved sword, specifically the Scimitar. This will make it so the only thing you are doing isn't flip back and shoot arrows, then occasionally roll-bs with the dagger.
3.) Pretty much just stick to your Pharis bow unless you are making it quality. Or willing to go with less damage.
4.) And here is one version that I decided to make, though I had plenty of ideas for different versions. http://mmdks.com/3i69
Leo ring will make that Rapier and bow hurt. A lot. And giant gauntlets for some high defense and at least some poise. Might only want 9 so you aren't stunned by two-handed rapiers, because they will ruin any attempt at you wanting to shoot an arrow at them.
I am a big fan of cosplays and use them all the time, specifically a V for Vendetta one. I find many of them to be a lot more flexible then one would think, and most you can easily make at level 99, even with some stats to spare.