The picture that WaltK provided is typical of the passenger side of a Hawk. The vertical frame piece that is forming a "T" with the 5" channel piece above may be your best point of attachment. This vertical frame piece is where the fire extinguisher is attached. The 5" wide channel piece that is the top of your "T" as well as the channel piece that runs the entire length up through the nose, are in fact the "C" shape with the open side facing inside the camper. So you won't hit any metal there.
I can vouch for how useless that 5" channel is for attaching anything on the inside of the camper. It's wide side is virtually against the outside siding. Can make it very annoying to come up with anything to attach along one of those too when doing modifications like I am. I am mostly building framing inside that's only attached to the main frame in limited places, the plywood lower area is not as limiting of course. And even the tubing in the frame is very thin so care is needed to attach to it, and more than one attachment point or it will probably pull out.
10 lbs of TV is not much, but remember how much we bounce and vibrate around on Outback roads. Also remember that the frame design is intended to flex, so what you put on should not stop flexing for part of the wall. I'd expect you would want the TV on the back wall, say bridging the large opening on the passenger side of the rear wall to mount your support. I'm not sure about trying a swing arm to get the equivalent position from the wall behind the window. You'd definitely have to tie down a arm like that when moving.
As I noted, the photos of the bare frame are of the only bare frame in FWC's "show" area. Well, not quite, there is a little miniature "bare frame" in that area too. For midgets, maybe, but more likely just a small setup that's easier to take to shows. It's kind of cute. I probably should have gone out on the floor more as there were probably frame stages being built out there somewhere too. But I doubt you would find a complete bare frame so visible out there, this one even has the roof frame attached.
Anyway, I'm going to attach 4 photos, each taken from the opposite wall of the inside of each wall, the structure is almost easier to understand from these inside views. The frame was located in a very difficult spot to photograph, one side near bright sun from a big door, the other side in the gloom and nearly against some concrete for part of it. It was necessary to use a very wide angle lens, so some parts look curved when they are actually straight. The campers that appear near it are in FWC's show section. Please note frames vary, there are some themes in the layout that probably follow through, but the photos are hardly the last word in the frame layout. Typical is a good word to use. I know my Eagle shell is a lot different, creating interesting installation problems. I expect shell frames are the most different as they are not really built up for the usual set of appliances.
Passenger/Window Side:

Rear Side:
Driver's Side:

Front Side: