Two big keys to getting a 95 on area 5 is practice, practice, practice and using overdrives. It really helps to familiarize yourself with when the enemies come. Don't hesitate to overdrive if you feel overwhelmed; you can get a lot of overdrives during the level.
And make sure you shoot as much as you can on the bosses, except for the last one. On the last boss, just go for the kill. Try to save at least one overdrive for the last part of the final boss; all those green missiles are hell-ish