In short.......you don't have a lot of cable, wire and break lines ta move stuff around. Some re-routing will give you something to work with but it won't be much. I don't think you can install risers on a FLH either, I don't think the fairing will let you. Harley sells a set of Touring Pullbacks that don't require a lot of modifications, they tell ya in the cataloge what you will need.
Here's a couple of tips.......Your wrists should be no higher than your heart, your arms should bend slightly at the elbow, your hands should be slightly farther apart than your shoulders, you should be sitting with your back and neck straight in the saddle and be able to see about 2" over the top of the windshield.
Most of us have a couple'o saddles, couple'o sets o' handlebars and enough windshields ta supply the local Police Department. Have fun makin it yers.