Also beware that if you use a SD/FF to display Amiga video on a VGA LCD monitor, it will look like crap. You'll need to use a CRT monitor... if you want to use an LCD, you're probably going to need to use a busboard that lets you use a PC VGA card or something, and I don't know if that will work for AGA stuff.
I spent a couple hundred bucks getting various equipment to display my Amiga on VGA... only to find out that for most of what I do, a Commodore RGB monitor works a whole lot better.