In my rough estimation of E3 for a 5G batch of this would look like:
11 g Gypsum (Calcium Sulfate)
18 lbs 4 oz Great Western Pilsner
1 lbs 10.7 oz Thomas Fawcett C45L
6 oz White Wheat Malt
1 lbs 3 oz Corn Sugar...
I agree with others that if the citrus oil is indeed oil based, you don't want it near your beer. I like the idea of some citrus hops added toward the end (or right as you pull the wort off the heat). Amarillo (aka Amarillo Gold), Ahtanum, Cascade, Centenial, Simcoe, or Summit all sound good...
How tall are you? Or better yet, what is the average heigth of the people pouring the beer?
I would think a person of 6' or taller would not have a problem with a 46" bar. Someone under 5'8" probably would.