Retirement tax questions

As per the suggestion of dmertz, I checked the maximize box for Profit Sharing Keogh in order to get the program to tell me how much I could contribute as the "employer" of my sole proprietor business. I don't actually have a Keogh of any type, but I guess this is a work-around. In the past, including last year, I have maximized my SEP and my solo 401K on the same return.
The maximum total comes from the "Self-Employed Retirement Plans" section of" Business Income and Expenses"and the "Keogh, SEP and SIMPLE Contribution Worksheet", which also has entries for Individual 401Ks

I am well over 50, and the total profit was around $15K. I don't know if the $14,5 (which popped up on the "Business" portion of the return) includes the $7K from the W2 either. The worksheet calls it "Maximum Keogh, SEP, SIMPLE, and/or 401(k) deduction allowed, not including defined benefit plan contribution(s)" It wouldn't make sense that having self-employed earnings in addition to wages would DECREASE the total that I can contribute to all my retirement plans. Not that it has to make sense.