If you're doing it in DB then you're gonna have to load each of the 700 images before you can do anything with them again.
If you wanna play each in sequence after loading then this might work: -
x = 1
do
cls
if x > 1 then x = x + 1
paste image x,1,1
sync
loop
The framerate would entirely depend on your sync rate using this.
You could delete each image after the next one is pasted as well but it'd mean having to load them all over again if you wanted to play it again.
x = 1
do
cls
if x > 1
delete image x
x = x + 1
endif
paste image x,1,1
sync
loop
That's all I can think of off the top of my head and I'm not the best programmer in the world either. Hope it helped though.