A TV antenna came standard on our 2013 R-27. And yes, they don't like to customize much if at all. One of Ranger Tugs' great attributes is how personal they are to deal with. But the demand for their boats is high and to meet it they need to keep everything standardized on the production line. Still, if you can get that conduit that nzfisher suggested, that would be well worth the arm twisting and cajoling that might be required 😉 . I could have used it several times over at this point. Running any new wiring from the helm area to the aft area is a total pain.
One other thing you might ask for is the Smartplug shore power connection and cord. I don't think they've adopted it as standard, but they have installed it for several of us. It is not a hard install to do yourself if they won't add it, and you don't save much by having them do it. But if they will, I'd do it during the build. Wonderful system and easily worth the upgrade.
Final advice: keep taking lots of pics! We made a visit at the point that I could photograph most of the pieces right before they put the boat together. So I got reasonably good photos of the wiring running throughout, location of the tanks in the hull, etc. I wish I had taken even more, and I took a lot. They have come in handy several times as I've tried to figure out where things are behind the refrigerator, etc.
Enjoy the excitement of the building process! You'll have your boat before you know it :!:
Gini