el_xero - the DLE 20 is more than enough engine for the Rev 70! In fact, if you like power and speed (and low fuel bills) it's the perfect engine! I've even heard one guy say it's TOO much power for him. btw - use the APC or Xoar 16x8 with this engine. 16x6 is under-propped. I get unlimited vertical and excellent speed with an APC 16x8. (or a 15x10 would do it, too.)
Good luck!