My first reaction is to:
Shorten the front brake cable, so it's straighter up from the brake. But make sure you can turn the bars all the way.
The rear brake cable looks about right. I turn the bars all the way to make sure it won't bind.
I try to get the two brake cables to just clear the bottom of the stem faceplate, so they won't touch or bind on the faceplate bolts. But that might not quite work with your internal rear brake frame entry point.
Cut the red cable tie holding the two brake cables together. I assumed these two cables would move a lot relative to each other as the bar is turned, but actually, on my bike, they barely slide past each other at all.
The shifter cables seem short, but maybe it's just the angle that they come off the bar shifters. I'm used to seeing an overlap between the loops. My under-the-bar wrap shift cables move relative to each other as I turn the wheel, so I wouldn't clip them together.
The right shift cable, (left in the photo) looks shorter than the other. I'd probably try a slightly longer left shift cable, and considerably lengthen the short right side one to be symmetrical from the front of the bike. I'd start with an overlap about the width of the head tube, and see how that looks.
I usually end up trimming the housing a few times, even a quarter inch, to get everthing just right before I grind off the ends of the housing. With under the tape cabling, I push the shifter end in all the way, temporarily tape the cable to the bars (narrow ripped strips of duct tape is easy) and hold up the frame end to estimate the length, cut it, push into the frame socket and evaluate. I then recut once or twice until it's just right.
The rear derailleur housing looks good, with a straight connection to the derailleur itself.
Nice looking bike!
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Adjusting bar height
Are you set with the stem length and spacers under the stem?
If you might move it later, try to allow for that change in position. But that's the problem with new bikes, they had to allow room for an unknown rider to make adjustments and so the cables are kind of sloppy looking.
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(There's not many google image photos of road cabling.)
I'd overlap the shifter cables even more than this photo:
