100% agreement with Mark above.
With the C5-3 returning, one should be able to use BP SU power in 18mm PMCs.
I definitely would NOT try r/c conversion.
It's enough to get one to fly in a stable rocket/chute configuration.

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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, TURMOIL, FIASCOS, and HAVOC !