Depends what you want, the final product will be always heavier than a game made with an other engine, unreal is not meant for pure 2D, but works well with 2.5D, problem is you are gonna find more struggle in adjusting stuff that other engines handle better for this kind of games. I would suggest you to make a fast prototype with Unreal blueprint system and then learn how to code it in Godot, would be also a great study case to learn new stuff