Without a doubt the UCD 46 could be lighter, it will be closer to 6 lbs . it would be a better floater at the mid 5 lbs
but your 72 would be perfect, Use a APC 14x4 or 13x4 wide blade prop. The correct prop makes a huge difference in performance.

Mine will not harrier well , but it is a much better plane than the S.E. The UCD 46 will even do a decent pattern plane impersonation and the knife edges are excellent at the proper CG. and it hovers and torque rolls easily It is actually a much better flying plane than the 60 size and I like the 60 size

You may have to join the elevators together to eliminate the weight of an servo at the rear.,to balance it without additional counterbalance. This is not difficult to do.

If you want something strictly for wild 3D look at a Flip. I think the
Global Freestyle is an underated plane I'm assuming your looking for an ARF .