Typically, business calc won't count as a pre-req for later calc courses (though this may not be the case at your institution). The usual sequence is Calc I-III, then real analysis. Not sure how things work with the quarter system (maybe some else has more experience), but Calc III is where you learn multivariable calculus. I don't quite understand why linear algebra is a pre-req for analysis, except possibly as a "mathematical maturity" requirement. You should be able to get that waived, though you should take linear algebra anyway. However, you will probably need multivariable calc prior to taking analysis.
To be completely honest, it doesn't sound like you're ready for a PhD program in econ given your current math background. My math background was pretty similar to yours, and I went back and did two more years of undergrad to complete a math major. It took 3 semesters (fall, spring, summer) before I could take analysis because of the calc pre-reqs.
I don't know what range of schools you're looking at, but your prospects for most decent programs aren't too good at the moment. You may want to focus on math for the next year and apply next fall (when you also have grades for the math courses).
I (and others, I'm sure) can try to give more specific advice if you want to describe your ambitions in more detail (especially what schools you are looking at, but also level of undergrad institution, potential
LORs, GRE scores, etc).