Applying this to ICONs:
DA wants 50x50 Avatars under 15K in size though 100x50 30K is allowed for groups?
This is an extreme limit for a animated GIF and usually limits to 4-7 frames. That will vary with detail in the frames quite a lot. Less complex backgrounds tend to be smaller as well and Text is also very small in file size. Text on the ICON is limited for readability so you will need to play with fonts and sizes until you find one that looks good.
Here is more detail on how to make quality GIFs
1) Have a good idea of what scene you are looking for.
2) Locate a usable source file such as AVI or VOB that VirtualDUb can take frames ou