My N900 has just been on side really havnt looked at in a while but will check out the new version over the weekend .

I am not sure how to go about makin an N900 specific version but will have a look into it also modules an exploits are updated all the time so not sure you could encluded them .

I have 4.4 running ok takes a lot longer than older versions to start not sure why that is , i cant find version 4.5 you mentioned so i cant test it .