Stop playing with old tech and toys.
Go full CDI, Dynatek is very small coils (bike stuff) and CDI boxes are not large at all and very simple system and reliable and cheap too.
I have been running the above for many years and 10's of thousands of covered real world miles. You can run any tuning you like, any fuel, any ratio, it will burn the lot. and unlike MSD (My Spark Disappeared) you wont have any reliability issues.
If you are in any doubts about Inductive V's CDI go rent a lab scope and test your secondary voltage @ 2k rpm increments to 8k rpm then post back, you will be shocked how much voltage you drop as rpm increases!!!
If you need some help for parts PM me or search my threads.