If that were my workflow, I think I'd be using Photoshop rather than using Poser rendering resources over and over.

The truth is, however, that unless you're doing shadowless images, your approach is disastrous as far as lighting goes, since background images do not interact with your lights.

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Hardware: AMD Ryzen 9 3900X/MSI MAG570 Tomahawk X570/Zotac Geforce GTX 1650 Super 4GB/32GB OLOy RAM

Software: Windows 10 Professional/Poser Pro 11/Photoshop/Postworkshop 3