There's more power going through the drivetrain, so if your tyre slips or your chain snaps, you've had it. It also means that the likelyhood of you going over the bars is higher.
If you have a syringe. Do what them lot have already said, and right before you do the bleed screws up, push a couple of syringes of water(mixed 1:3 with Anti-freeze) through the brake. It'll be the ultimate bleed and it won't freeze im this shit weather.
You have a bad habbit of letting your back brake off too early when you're gapping. It's potentially dangerous and is taking away from the distance of the gap as you're kicking against the backwards roll. Just preload more instead and you'll be sorted. Good riding though man, keep it up!
Yeah so as you can see, there isn't a "best pad" or "best tyre"*. It's ALL personal preference. *Yes there is. Read my original post, what I wrote there is 100% FACTUAL.