So the Onyx invention attempts resulted in 3 successes out of 12 tries putting the invention cost at 20 million ISK per run. Its not spectacular but it is acceptable. I'll get working on building them, probably three at a time. Current parts put the estimated profit at 21 million ISK per ship, so about 189 million total. Not bad at all.
As a bonus, I'll have 20 Invulnerability Field BPCs coming out of the copy lab in a couple days, and some cloaking invention in a week and a bit.