Hi @Danielle C.,
First of all, congrats on taking the steps toward starting your venture. Respect.
As far as being having your license, if you are acting as the agent on your own deals, then you have the opportunity to take the commission associated with being your own agent on the deal. I personally stayed clear of this and never got my license because I would rather have the agent that brought me the deal (will continue to bring me the deals) get as much money as they can out of the deal. This builds on the relationship with said agents and should, in theory, have them bring you more deals in the future. I care WAY more about this and getting someone that worked hard on a deal paid that taking the extra 2.5%-5% for myself. I hope that answered your question.
As far as using HML and a credit card, it sounds like you are in the same position I was in recently. I was trying to save up as much money as I could to do my first deal and working with my mentor (a fairly successful real estate investor in LA) learning as much as I could until I had the money for a downpayment. Because I was patient and continued to network, I was able to connect with another investor looking for a workhorse (me!) to join him and become a partner in his investment firm.
@Chinmay J. is right. It may not be the answer you want to hear but in this industry we must learn how to say no, be patient, smart, and take our shots when they present themselves. Even if you could find a HML to do the deal with you, I don't think taking the down payment on credit card if smart since the interest alone will probably eat at your profits. I think the best thing to do right now is either (1) Get someone to do a JV with you, which will be tough since you haven't done a deal before but it is doable. You have to outline IN DETAIL everything you bring to the table and will do, showing that you are the workhorse of the deal (2) take a family loan from a wealthy family member or friend, or (3) get REALLY good at saving until you've saved enough to do your first deal. Always here to help!