Aha, I continue my lonely conversation for the sake someone might find this later. 
For now, I solved my timing issues by creating child-Widgets under the main UI widget, which will be triggered at the timings I want.
Not sure if this is ideal, but at least everything looks like to be working.
The ammount of data from these alpha targas I have is quite worrying though… As I have over 2gb:s of those already, just for animated UI effects…Yikes, It cant be good to have gigs of UI animation like this. 
I am quite pleased with the looks though.