I had a BB micro power, blue box, and new coils (2) fitted to my 1973, K2, about two years ago. Long story, short, unbeknownst to me, the new coils had been wired incorrectly, in parallel as opposed to series, which introduced symptoms that led me down a long, wrong path.
In the end, once the coils were wired correctly in series, the engine is starting and running good.
I would recommend the BB elevtronic ignition system. Their website is full of useful FAQs and PDF guides. Go for it.