Not sure if you have damper rod or cartridge forks.
For damper rod forks, I’ve used Race Tech gold valve, cartridge emulators and springs for years in my and the wifes’s HD’s as well as our Gold wing Side car. They are not that hard to put in and work really well.
If you are intending to upgrade the springs now and install cartridge emulators later, be aware that cartridge emulators do not work with progressive wound springs. They require constant rate springs to function correctly.
Give racetech a call, they should have parts to fit .
When you call, use the menu option for tech.
Talk to them first, to see what parts are available.
RaceTech may also have the other parts you need for your forks, such as seals and bushings.
They carry springs and high flow valves and misc parts for most cartridge forks also.