Not sure if better but you could have the game mode Get All Actors of Class with Tag, after tagging Target Points. The whole thing could be fired on Begin Play in the GM:
It also greatly depends on what you’re planning to do with those. Perhaps getting them once and binding what’s needed with dispatchers is better - this way you’d need no arrays or hard references afterwards at all.
How to approach the whole things depends on the scope. If it’s only 3 and you’re doing it once, I’d tag them.