You should not. By doing so, you're incurring debt without the intent of paying for it--that's fraud, and could result in the debt being found to be non-dischargeable in your bankruptcy case.
In my opinion, once you determine that you are going to file bankruptcy you should stop using the credit cards that you plan on using the bankruptcy to discharge. In addition, you should not have any cash withdrawals on those same credit cards for at least 6 months prior to filing.
Disclaimer: I provide information about the law designed to help users safely cope with their own legal needs. But legal information is not the same as legal advice -- the application of law to an individual's specific circumstances. Although I go to great length to make sure my information is accurate and useful, I recommend you consult a lawyer if you want professional assurance that my information, and your interpretation of it, is appropriate to your particular situation.
