What if I don't need tax/jshipping/payment processor for my store?

I am in a bit of a unique situation whereas, I never used tax, shipping, or a payment processor with my homestead store. I use the store to add individual products which are unique orders for each screen printing job and just did the tax and pricing breakdown in the comments section. Then my customers would just add it to their basket in the store and checkout by entering their credit card information. Will Big Commerce allow me to do this without needing all of these required updates you are asking for with shipping/tax/payment? I use Intuit Go Payment as a payment processor. Is that an option with Big Commerce?