Thanks for the compliment :D
I don't practice bdacus as much as I use to, but when I did I would go into training mode for at least a few hours every 2-3 days in order to make sure I had the timing down. You have to practice the timing of doing it, there's no other way to do it. Remember that you have to put the input for the bdacus within the last 10 frames of the move you're trying to do it out of.
I use default control settings.
The match up is pretty long to explain, but a really simple summary is Falco racks up damage on Snake pretty easily through his juggling and edge guarding. Snake can live to extremely high %s and kills Falco really early. The match up is pretty even in my opinion, one thing you need to practice in order for Snake not to be too hard for you is juggling. You should watch SLS' matches vs Snake since he has the most recent matches of a top Falco player fighting a Snake player and he's very good at the match up.