Escape speculations

[Eva Elisabeth]

This is a "what-if" question, thus I am asking for your speculations.

To me, in advance, the idea of assassinating the president in a theater box in a fully packed house during a performance and escape via the stage would have sounded most unrealistic to successfully accomplish, precisely succeeding in flight would have. But the screen-play did work out. So I wonder - theoretically, could any of the conspirators have successful escaped capture? If not, who could have made it the farthest, and how far would that have been?
If JWB hadn't broken his leg, how far could he have come? Would Canada have been the more promising destination?
And Powell - if he hadn't abandoned or lost his horse, what could he have done?
If Dr. Mudd had been more suspicious of that he might get into serious trouble, would it have made sense to flee?

Thanks for any thoughts on this!