Home Two Table Tournament

[jdAA88]

I'm organizing a home tournament with 10-12 players as of now, and i'm thinking of having at least 2 tables and then a final table. Do you think it is a good idea to have the top 2 players from each table play at the final table, or the top 3 from each table?
Also, once again, I need help determining the amount of chips, values, etc to use. I have a set of 500 chips (100 white, 100 black, 100 yellow, 100 red, 100 grey). HELP!
Thanks