love track car threads and big up to you with what your doing. Your doing all the right stuff, handling is everything for track days, thats where you gain time and speed. Polybushes are what you need next. bonus with the coilovers
Blyton is a fun track but gets boring after a while, a few miles down the road is Cadwell which is a real drivers track.
Watched the video and through the fast chicane you should be pushing 170 Kph (110mph) minimum through there and about the same approaching the tight chicane on the back straight
Here's a couple of our videos, one in an MG ZS 180 and one in a Fiesta with a Puma engine
http://www.youtube.com/watch?v=-b49RpKJ5Gc" onclick="window.open(this.href);return false;
http://www.youtube.com/watch?v=nA3U9s7mUP8" onclick="window.open(this.href);return false;
bonus is your local to us, we are in Bradford, Shipley to be exact, could arrange something and happy to help/ discuss mods. By the way Oulton park is closer than Elvington , Blyton and Cadwell.