The BME is a good engine, as a matter of fact, they are all good engines.
The ZDZ 80 single is as powerfull as any of these at a much lower price.
As for making the tail lighter, make sure you install a single large servo in a pull/pull fashion on Rudder and as far forward as you can. Also if its a removable stabs, you can make them permanent and eleminate the tube. You can install the elevator servos in the fuselage ahead of the tail. It all adds up. Then you would have a very light aircraft. By aving a light aircraft, then the ZDZ 80 single becomes a very interesting allternative. And the price is right.
But if you do go with BME, you can't go wrong. Another way to keep the weight up front, is to install the batteries right up there with the engine. Even install the throttle servo and choke servo (if you use one) right up front in the engine compartment using Fiber Optic servo extensions to eleminate any chance of noise feed back to the receiver.