IF--- there is no problem with "crap" coming from the ignition to/thru the batt -to the rx - it should be fine .
Howsomenever - I am a bit spooked of any setup to the ignition which does not allow it to suck a quick deep shot of power.
It won't show on a meter - but a good scope setup will show it
The problem is in a ignition transistor not fully saturating - which means heat which means a shorter life for the transistor.
Both 3W and Jeri Vlach have issued warnings or recommendations on NOT using regs to ignitions and/or not using cells with high impedance -
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I asked a knowledgeble model engine ignition designer and he 'splained it to me.
, step by step
maybe I am just an old worry wart