do I have what it takes?
The main body of your post was completely irrelevant to this question.
SALES determine whether you have what it takes. Without sales no business has what it takes. Quality of work has little bearing on whether or not you'll make it. There are some god awful photographers who are highly successful and some amazing photographers who can't sell to save their lives. SALES.
As Banquetbear has already pointed out you are asking entirely the wrong questions. Can you make a living charging xyz? You should know the answer to that, if you don't them you haven't done the ground work you should have done.
Seeking affirmation about your images and your quality as such won't help you with regards to business. In business there are two metrics that matter.
1) Does it sell at the price point you need it to sell to be sustainable/profitable?
2) Are the clients happy?
The main concern when "making the jump" is not quality... it is SALES. If no one will buy what you sell it is worthless. Businesses exist to make money. Sure a business can produce great quality work (also they can produce crud work) but in either case they have to SELL the work.
My honest opinion is that you need to start approaching starting a business like a business person. Banquetbear always gives solid honest advice, you should listen to it. There is absolutely nothing elitist about his advice... in fact getting the reply you did will hopefully give you the head space check you need.
Want to run a business? Start thinking like a business owner. At the end of the day the photography itself is just the product, and there is a whole lot more to running a business than just the product.