nice lookin ride there...
"I assume because it is a new engine and needs to be broken in,but is there anything I can do to help it on hills?"
LOL... seriosly thou, it just needs broke in. around 80-90 miles on my first build i could tell a big difference in power. for now you could maybe drill some extra holes in the air cleaner housing (i've seen some guys here do that to those style cleaners)expansion chambe'rs a good call too.
i like fenders but keep an eye on their brackets... especialy the front one
good job man