I've read this plane needs flying wires. How did you guys go about making and installing them on this particular plane? Thanks.

From my experience, an Aresti does not need flying wires.

I flew mine with an Irvine .53 with an 11X7 on a pipe - it was VERY fast. No hint of flutter, etc.

I did seal the hinge gaps with clear UltraCote, though.

I too have an Aresti with an Irvine 53 and APC 11x6 with no pipe.
It is a pretty snappy plane. See no need to change anything about it. No flutter or any other problems other than the pilot.

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DoubleD