Are you aware of the waiting times the applications for spouse's visa have? It could take more than 1 year after your application is submitted before your wife gets her K3 approved. I'm not up to date on the cost of the visa but it is over USD 400 for the application alone. As far as I know, if your wife leaves the US and doesn't come back at least once every year she will loose her resident permit.
In case you choose to go for the B2, it is she (not you) the person applying for the visitor's visa. That means, she'll have to provide convincing evidence she has strong economical ties to Indonesia that will assure her return. This could be pay stubs of a steady, well paid job, property, own business, etc. If she presents herself at the embassy with your financial support information alone, it is very likely her B2 application will be denied.
For more information on the K-3 and B-2 visa processes, look here:
Nonimmigrant Visa for a Spouse (K-3)
Visitor Visas - Business and Pleasure