Dual Blade videos and stuff

At 1:56 in the Chaos Vellum video (http://www.youtube.com/watch?v=wPU7fbW71tc&t=1m55s) How do you manage to flash jump so early after you used blade ascension? Is it just by using a green potion, booster and speed infusion? Do you have any other weapon speed boosts like inner ability? Are there any other ways to increase weapon speed?

I also noticed in some of your videos that you manage to use final cut while simultaneously jumping quite smoothly. Are you using a controller to play or is your keyboard control that good?

Having a lower weapon speed helps a lot for Blade Ascension > Flash Jump since you can tap FJ as soon as you're at the peak of the BA jump and it should work right away unless you lag a little (which does happen occasionally, but the jump at 1:55 was pretty much perfect), the jump at ~2:46 ish is what usually happens though. The only speed boosts I have in this video are decent SI, booster and the green potion, so I was at (0) weapon speed in total.

I haven't used a controller for any videos recently, I think the last one was the hard Magnus solo a few months ago, I moved my buttons around a bit and couldn't find a comfortable layout so I use the keyboard now instead. Mostly just a lot of practice I guess :p