Hi !
Marie and I are softswingers (haven't gone "all the way" yet) mainly because we haven't met someone we wish to do that with yet.
There is no age limit to this as we have seen and met people from their early 20's into their late 60's.
I don't know that people are turned off by a couple so young as yourselves involved in the lifestyle as much as they are possibly surprised that you are getting into the lifestyle after knowing each other a short period of time (assumption). Most of us older folks (I'm 43 today...boo hoo, wife is 42) have taken awhile to build trust and security in our realtionships to accept seeing the other in sexual situations with someone else. Also jealousy is a big factor many of us had to overcome (lots of communication). Maybe starting younger is the key ?
We have been to many clubs and I rarely see couples as young as yourselves there.........that doesn't mean they have never gone or just maybe to clubs other than the ones we have been to. I would try some clubs in your area to see if you see anyone there in your age range. Also you can search websites like : swinglifestyle.com , adultfriendfinder.com, or lifestylelounge.com or many others to run a search for other young people you could possibly connect with.
As far as being watched , also called watching and being watched. This is a softswing activity that some people ask for and search for other couples to do this specifically with. Again look in some other swingers databases for this activity. I know on aff.com you can specifically search for other couples for exhibitionism/voyeur activities.
Good Luck in your search and have fun