If you don't have the demand to justify whatever investment a merchant service provider's solution will cost you, then you really don't have a problem. Handle the small amount of orders you get manually and send the bitcoins straight to Bitfloor, and cash out once a day or once a week, and then move the money (for free) via ACH to your account.
I did not know about bitfloor... but looking over their site and thinking about all this over the past few days has given me an idea....
Here is what I can do:
1) The shopping cart experience stays the exact same.
2) When they get to the payment window there is a check box that says "pay with bitcoin" (this will really be just an offline payment type so that the order can go though)
3) When the bitcoin checkbox is selected our bitcoin wallet id will show up.
4) there will be instructions to send the dollar amount in bitcoins (the customer will have to do their own conversion)
5) They are checked out, and before I send the order, I just make sure the bitcoins have been transferred.
We are closed on mondays, So I have the afternoon to try and implement this!