I don't like to be the one to tell people what to breed but I would just recommend doing your homework and just make sure you have a good plan for what to do with the babies. Also think about why you are breeding them, if it's just to get a bumblebee for yourself, I highly suggest you just buy one. They are very cheap and there are literally 100s needing a home. By breeding two very, very common morphs you are just adding to an already flooded market of common morphs. I understand it's very enticing to breed your own and everybody has to start somewhere but if you intend to sell babies, you may want to consider investing in some higher value/less common morphs so that you will have a much easier time finding all the babies homes. Just my opinion though and I wish you luck in whatever you decide to do.