firefox extended support release, on a network that is usually a lot worse than this but currently maxing out at around ~450mbps down.
load times:
index: 4.31s
/dividers: 12.22s
/favicon: 23.36s
/favicon/2: 14.32s
/stamps: 17.83s
/blinkies: 11.86s
/buttons: 7.36s
i suspected this was so low because my browser aleady had some of these images cached from visits to others' sites, so i reloaded with cache disabled in 10.94s. given the size of your html and css i don't think my cache was doing that much work with the images themselves.
/text: 8.24s
/misc: 3.09s
i didn't experience any performance issues, but i let pages load fully before attempting to scroll. this is a from the fact that my internet is usually terrible.
i can come back when my network is up to its old tricks if you want to know what your site would be like for me under more normal circumstances, but i think it's fine.
if you want to be safe, i recommend aiming to keep each total page size (assuming no cached assets) below 5 megabytes