AOR (app-o-rama) with Business Credit Cards

In the past few weeks I have applied for 3 business cards, one through Advanta ($10k credit line, but only $5k can be used for balance trasnfers), Bank of America ($20k credit limit, but only $10k can be used for balance transfers, and Chase ($20k credit limit/balance transfer limit). Among these 3 cards I took out respectively $4500, $10000, and $17500, so a total of $32000, which I have deposited into a high yeild savings account offering 5.30%. All of these balance transfers carry a 0% APR for 12 months, except for the Advanata card which is for 15 months. Each card had a 3% balance trasfer fee capped at $75 except for the Advanta card. Overall I am aiming to make nearly $130/month. This will vary with the min payments that are due for the cards, but that shouldn't change my initial earning by much. Bad part is that this income will have to be reported on my taxes, but hopefully my CPA will suggest some things that I can consider to be deductible.

An advantage to using business cards is that the credit line is not reported to credit agencies, thus it hardly effects one's scores. The main credit hit takes place when applying for the card. Hopefully the impact is not much, but then again I am not looking to make a major purchase or finance anything in the near future.