David:
First off, most parlor and stage routines are not performed surrounded. You have 90 to 180 degrees behind you covered by the back of the room / back of the stage. Even with busking, you will have your back angles covered.
The distances you are talking about is what is called parlor magic -- as if you are performing in someone's living room. Essentially, you can go up to 100 people with that type of magic. The classics play very well here -- cups and balls, billiard balls, miser's dream, sponge balls, linking rings, etc.
My suggestion is to get a subscription to Genii Magazine. It is $35 for a digital only subscription. With the subscription you get access to 77 years of back issues. There are a lot of great routines in the Magicana section as well as routines by Roberto Giobbi, Jim Steinmeyer, Max Maven, Dani DaOrtiz that can be performed in parlor settings. Really, it is a matter of finding routines and presentations that excite you. There also are a lot of reviews that give you a sense for the quality of products.
I could list a bunch of products that I like, but this is something you have to find out for yourself and figure out what you like based on your performing style.
