I ran OS VF powered Arrow's back then and recently did a redesign to electric using the E-Flite Power-52 (590Kv). I used an adjustable plug-in wing and diamond stab for adjustability and simplicity and E-retracts, which I found incompatible with a ESC-BEC requiring a receiver battery also. The removable pipe cover opens up the front half of the fuselage for equipment access.
At 4 1/2 pounds less battery the airplane really came alive with a 12-12 prop on 5S.
E-mail me for more info.
Jim