you can use this guide for any mod, dowload Smoothdoom.pk3 and place it in the gzdoom folder, insite there is an ini called gzdoom.ini and that's your main source to say what mod you want to load, is structure simple enough so if you want ALWAYS to use Smooth Doom with any of your mods find [Global.Autoload] and write in the line below "Path=SmoothDoom.pk3" (basically you are writing the directory), if you want to use it only with specific wads look down below there are setting for all the official wads.
for the Dynamic light is a thing about preference, inside the game you go Option>Display option>Hardware render inside here you can control the intensity of all the lighting and special effects my preference are:
"Sector light mode" you can adjust the ammount of light by profile
"Weapon light strength" on 16 (how much light you are gonna create each shot)
go inside Postprocessing and activate Bloom (now some object gonna have bloom)
for Particle effect you check always in Hardware render Particle Style, you probably like "smooth" but i prefer "square"
go back in Display option and check below there are 3 option called "Rocket Trails" "Blood Type" "Bullet Puff Type" and you set all by "Particles"
I usually stop here, i know there are many other option but Doom is an old game it doent need more than that in my opinion, default GZDoom is quite an ass to see.