If you choose open access and pay the Open Access fee (APC), then there is no problem in your placing the paper in a repository immediately on publication.
The 6/12 months embargo does not apply to open access papers.
If you choose open access and pay the Open Access fee (APC), then there is no problem in your placing the paper in a repository immediately on publication.
The 6/12 months embargo does not apply to open access papers.