I think 90 knots is too slow, unless you have to deal with a tailwind.
The approach is easier to fly at 110 or so, and you get a better
transition to the miss at these speeds. Control response is much more
positive.

My Cutlass RG was based at DCA for 8 years. I normally flew at 120 -
140 knots. All you have to do is chop the power at the middle marker
and fly both the glideslope and the VASI. Your airspeed will decay
quickly. That 200 feet of altitude is nearly a nautical mile
horizontally. Starting at 120 knots and decelerating, that's about 30
seconds. If you are on the glideslope, you won't balloon anywhere.

Good advice on the miss. If you hit DH and there is nothing to see,
pitch to Vy, add power, and get the gear.

Paul