Both aircraft left Goodyear for Marana. They were spotted conducting air tests on April 16 (source: cactuswings website).
The airline's new website offers a newsletter "Preference"
http://www.flybellviewair.com/bellviewnews.pdf in which it's said that the a/c will also be registered in Nigeria soon.
No news on route commencement, although all indications point to a Mumbai initial route.
No further info available.