There is no simple way to explain it to you. You need to know what you need to know or else you end up building garbage. 90% of my lights are from pure scratch and probably 40% of them are somewhat useless because I did not know any better.
If you want throw, you need the brightest surface area. Amount of Lumens compared to your Area. Xpg2 is 1/4 the size but only half the lumens. I don’t know the math but this means more throw. This is a aspheric lens: Lens I suggest you to buy one of these and try it out. If you do decide to try one, buy THIS ONE. I bought over 8 lenses from different people and they do not focus as good as this one. (I am not related to this seller.)
Since you do not know what dedomed means, that means you need a lot of reading on “throw” try searching for some keyterms: throw, pencil beam, deep reflector, throw king, dedome, Wavien Collar.
DrJones’ magical text
Good luck, I suggest you start small.