If Personal Finance did not count, I'd tend to favor Info Systems. I work on electronics everyday though. I find that kind of stuff second-nature at this point. You may find Business Law easier. Like many things the difficulty of that exam seems to vary from person to person.

Though if you were to do Info Systems, it would set you up nicely to also take Intro to Computing and Managment Info Systems. If you think you'll need either of those later on, you may want to knock out Info Systems. You'd be more familiar with the material later.

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CLEP exams passed:
Management, Accounting, Marketing, Macroeconomics, Microeconomics

DSST exams passed:
Human Resources Management, Organizational Behavior, Statistics, Management Information Systems

Earned:
B.A. in Business Administration: Technology Management (magna cum laude) from Saint Leo University

In Progress:
M.S. in Leadership and Business Ethics from Duquesne University (24 credits completed, 3 credits in progress)