SAP FICO might not be the right choice for you, as you are not from finance background.
SAP FICO is not just configuration and few end user transaction codes. However, you should know the financial implications as well. I am not discouraging you, but the fact is, being a FICO consultant, if you are not able to answer what is debit and credit, then I do not think you could add value as FICO consultant. If you become a FICO, you need to compete with number of already established accountants /consultants, which would be very challenging.
With your ABAP, probably, you go towards to analytic products such as BI / BOBJ / HANA. I am sure they would give much boost to your career.
Hope this helps you.