Lesser are known to possible produce some bug eyed babies. You choices are completely up to you and what you want to produce in the future. I would say go with the fire. I personally am planning on picking up a firefly female soon. Bumble bee us good but I would personally get a male bumble bee since he can breed to more females and is also a 2 gene bp. If you can afford all of them then I would say pick up a 2 gene female instead. Like firefly, pastel lesser, or even a spider lesser. That way you will be able to produce a lot more offspring variation. If your budget is $400-500 you might be able to get 2 single gene females at a show.
Tom