Ignore the 1919 glideslope intercept at the OM, as that is for an ILS approach only. For the LOC approach, in Cat A, you will cross the FAF at 2000 and descend to the 660ft MDA over the next 5.5nm.
There are (at least) two ways to plan and fly a non precision approach. You can just try to descend constant from the FAF to the MAP, hoping you reach the MDA and maybe being in a position to land. The alternative is to reach the MDA early, prior to the MAP, ensuring that you spend at least some time at the actual approach minimums.
constant rate to threshold
For a constant descent rate to the MAP, you should divide the altitude to descend (FAF minus MDA) by the distance to travel. In this case, that's (2000 - 660)/5.5, or 243 feet per nautical mile.
early descent to MDA
There is no published VDP, so I'll assume a self-determined point 1.0nm from the MAP; this means you must descend at 330 feet per nm: (2000-660)/4.5. At 90 knots that is around 450 fpm, which is about what I'd expect for a non precision approach.
As far as a decision-to-land point goes, that depends on the aircraft and your personal minimums more than something I can calculate.