So it successfully installed, thats good.
According to the font hack documentation, you should not see custom fonts in the Aa menu. You must use KUAL to change the fonts, KUAL to load the fonts, KUAL to restart the device so it sees the fonts... Seemingly you must have python installed too.
The whole thing looks massively complicated, which is expected since this modifies the framework in exciting ways... I suggest rereading the docs with an eye for detail. There is a lot of it and I imagine it trips up a lot of people the first time.
P.S. I suggest we continue discussing the fonts hack on the thread for the fonts hack.
More people will see it there, and the conversation may prove helpful to others in addition to getting NiLuJe's notice.