I guess I couldn't get away from the concept of reinforcing the LF response and maximizing that. Thank you for reminding me of the reason why I want to do this and setting me straight. : )
Modelling the 2.5 with woofer on the back might be a challenge. I suppose I will model with both woofers on the front, but place the .5 on the back. I'll let you know if I get anywhere.