1. Flash using either the 8GB or 5GB custom emmc.
2. After flashing the latest firmware from Nokia, install CSSU.
3. I have karam's speed and battery patch but not the one's from the repo, haven't updated them for a long while. dunno what the latest buzz about those patches are but they do help.
4. NITDroid. I don't usually use but it's nice to have options.
5. Backupmenu. Definitely a must-have.
6. h-e-n. (power kernel required)