yes 2 ignitions current draw double but I make this consideration

each turn of engine I mean each 360º each ignition will operate oine time

with a single ignition with a distribuitor the ignition will operate 4 times each turn almost the same current

the other problem I see is the avance, adjust it will be diferent because ignition (single) will work undertanding the engine is runing 4 times faster than the really is doing I mean in 1000 rpm ignition will work as if it be in 4000

And in 6000 ignition will be in 24,000 I tested Rcel Ignitions at no more 16,000 over 16,000 sont works well it began to be hto much high switchin frecuence
regards
Maximilliano