@X-Ray
The daughterboard is a replacement for the A400D daughterboard, so it will not fit an A1200.
@Robert
It's a nice setup you bought there, but if you want to do something nice for yourself get a faster CPU card (at best a 060 but a 040 will also do) and a graphics card for it. It will greatly enhance the usability of your Amiga.
I have the same tower at my parents house fitted with a WarpEngine 040 card and a Retina GFX card. Just a shame I don't use it that much anymore

First thing to check when you get the computer is to check if the battery has leaked. If it has you must remove it immediately.
AHA, just read the description more carefully, so get that battery out as soon as possible!