Unfortunately you tube isn't for everyone. Not everyone is going to make it, because not everyone is entertaining (in the traditional sense) So the chances of going "big" are quite rare. That being said... Who cares. Youtube used to be all about the content and having fun with what you do. It was never meant to be this new internet hollywood like it is now.
Don't worry about getting big, you may never go big (big being 100k+ subs and 50k+ views per month).
As to if you will go big or not... as of right now you wont. Why? Because you are just beginning. You have a lot to learn about what keeps your audience engaged and willing to watch your stuff.
For instance, I feel like your intros are a bit long (usually 2-4 seconds is a good intro and some of your videos were going 12 seconds. As a viewer I find this kind of annoying)
For youtube you need to have a certin kind of attitude to make it in this gig.
If you act like a hammer: Want to make a big dent really fast A.K.A. get big real quick. You probably won't make it and you will get discouraged and quit.
But if you act like water: Consistent and relentless with your work A.K.A. constantly improving and taking in the criticism like its pure gold (cause it is, do not get offended by criticism). then you will make it big in your own time.
Water doesn't use power or speed to make stuff like the grand canyon. It uses consistency, which is one of your most important tools. only second to being humble about your content (its never perfect)
You may be noticing that I am not big, and to be honest this advice was given to me by someone who is quit large (back when he was at around 80k subs ha ha @
Wreckless Eating ) So you can trust this advice, as he is the proof in the pudding.
Don't get discouraged and just continually work on your stuff, if you do this then I have no doubt you will make it big.
(I can tell you work hard as it is, seeing the professionalism in your intro's, editing, and thumbnails. So honestly you are on the right track. keep it up)