BelzebubDont forget the grain slider and rising the blacks
I currently have Adobe CC for Photographers (Includes Lr and Ps) with the student discount, it's $9.99 a month, not a bad payment. I would suggest getting that.
Don't buy VSCO presets. It so easy to make it yourself if you absolutely want to mimic that style. I'd say develop your own style.
I will say this, the only thing that I really enjoy personally from photos edited with VSCO, is the matted shadows. All the grain, yellowish colors, etc. are not my thing.
If you like matted shadows, then mess with the tone curve. That's what I do if I want to matte them.
Answer to, "how do I get better/ more professional?"
-Just keep shooting and keep editing, you will soon find better ways to shoot and better ways to edit by simply getting your hands dirty.
I am still trying to nail down an editing style, it takes a long time and work.
There are still some Lightroom sliders and settings that I don't know how to use, or what there purposes are. I think a lot of people can say the same.
Hope that helps homie