By the way, swap is already activated (no additional steps needed).
Overclock is not absolutely necessary anymore, it works fine with 250-600 MHz (thanks to freemangordon work). So you can try without first.

Boot time is still a bit long, so be patient if the device is a bit unresponsive for let's say 2min, then it is ok and quite fast with a good SDcard and devel upgrade.
The two really useful remaining tweaks from the wiki are the '.nomedia' file in /home and the lower radius values in transitions.ini file

(The N900 wiki is not totally up to date, it needs to be modified a bit, i'll have a look).