For a small business with one owner, a Schedule C (or C-EZ) attached to the 1040 will suffice. No need to send a 1065 to the IRS and then submit a K1; it is just a small business in the eyes of the IRS.
Keep it simple by keeping track/records of your business income and expenses and report it on the Sched C which attaches to your 1040.
Note: I am currently taking a corporate tax course & studying for the CPA exam. I prepared taxes as a VITA volunteer last year.