Take a look at that 1622. The 'counterpoise' if connected on the part of the mount that is on the outside of the window, so that's where it would normally hang from... outside. It wouldn't really hurt anything if it were inside on the floor, that'd work too. One of the things about any antenna is that there is some fairly high voltages present on the ends of the elements. If you put that counterpoise inside then it's a fairly good idea to insulate the end of that counterpoise to keep it from touching something that wouldn't enjoy being shocked, or getting an RF burn. And not just the very end, but for a ways back from the end. Using insulated wire and covering the end of it with tape (whatever) is a very common way of doing that. The end of that 'antenna' section is 'hot' too, but is usually far enough out of reach so people can't normally touch it. That voltage is seldom enough to be any danger of setting something on fire unless you are running quite a bit of power. So not a biggy, just be aware of the possibility. Keeping an antenna as far as possible from things that can be affected by RF s a pretty good idea (TVs, other radios, etc.) so why not toss that counterpoise outside.
Jeff's right, there's all kinds of bends/wiggles you can put in an antenna and it not affect it all that much. If it's too long to 'fit', bending the thing so it will is okay. I don't think I'd bend it back onto it's self, or coil up the 'extra' length, but almost anything else will 'work'.
It's just a thought, but while waiting for that '1622, why not use that bazooka. Run one leg of it up the corner of a room, the other leg along the baseboard. If your ceilings aren't 9 feet tall you'll have a little extra at the top, just fold it along the ceiling or ceiling/wall come together. If you haven't already tried that, you might be surprised. It seems like a good idea to use a corner on an 'outside wall'.
Lots of possibilities, most of them beat not having an antenna.
- 'Doc