Can't you just take the sideplate off and remove the lock lever? No need to file anything.
Also, by the time you pay to have the front sight milled off and dovetailed for the XS sight, you could have paid for one of the titanium models with the pin-on front sight blade.
Don't get a trigger shoe! Dangerous. Good call on the Tyler though, I've always liked that setup.
And I have no clue what you mean by a carbon hammer/trigger, but I sure as hell don't know everything. Let's see some pics!