Advice on home poker game structure please

[HoldingFolding]

We are going to have a poker game, I am expecting between 10 & 20 players.

We intend to have 2 tables of NL HE ring games. A decent percentage of the players will be novices (hence I want to stick to just one game), and most will be adverse to losing more than $50.

I'm thinking of:
Table 1: $50 buy in blinds of $2/$1 no ante
Table 2: $20 buy in blinds of $1/$0.5 no ante

Does this sound like a reasonable structure? Any other advice or appropriate links?