The game locking up after a few turns can be of so many reasons. Think of reappearing factions which don't have the proper setting in the startpos file. Are you sure the other factions which you removed are removed completely? Maybe you could upload your startpos file?

I also noticed that you tried to mod the date to use "half weeks". I guess you would have to MOD so much stuf just to reflect the date on everything from creating units, taxing, building, etc. The year is 164200 but Im sure you are trying to MOD that as well.