The choice of an LED lighting system MUST include LED assemblies that are rotationally adjustable. Otherwise, there is a good chance that you won't have the correct beam positioning. Also fan cooled LEDs will better dissipate the internal hear generated by the LEDs.
Don't cheap out, as you often get what you paid for (at best). I've used a couple of brands of LED systems, and I settled on GTR Ultra 2 LEDs. They are expensive, but they are guaranteed for the life.
The actual LED beam adjustment mechanism is different for different brands/models, but the instructions supplied with the LEDs (or an installation guide on their product web site) should guide you through the process.
Bottom line, the popsicle stick in the LED headlight holding the LED chips needs to be as close to vertical as possible, after installed and locked into place in the headlight housing, with the LED chips pointing to the 3 o'clock and 9 o'clock positions. The photo of the guide below, while not for your specific brand/model, will give you a visual sense of how these LED headlights need to be positioned in a correct alignment within the headlight housing.
The fast flash is called hyperflash, and you need to install resistors in those circuits, in order to slow down the flash. I left the hyperflash on mine, as I believe that the fast flash attracts more attention from other motorists, and after all, that is the purpose of the directional signals in the first place. I will note that hyperflash is illegal in some states.
One other item to note...... Installation of aftermarket (not on originally equipped vehicle) LED headlights for on-road use is illegal in the USA, and the DOT notified dealers and repair shops 2 years ago that they need to step up enforcement on this when performing inspections (most probably don't though).
I trust that this info will be helpful to you.