I’m not going to say you won’t be limited, because there are things that are not exposed to blueprints.
You also won’t be modifying source without C++ and there are some things that just are easier to code in C++.
That said I do not believe you should worry, there have been whole games released on PS4 and others by UE4 using only Blueprints. If you truly don’t care for learning C++ then don’t worry and just continue as you are; and who knows, after you’ve made it a lot further perhaps there will be specific code you want to refactor into C++ and that will always be an option later.
Ultimately my advice is not to worry and continue with whatever makes you productive.