The Legacy is a bargain for the asking price, no argument. Alternatives are out there, however.
The Mo'Best is a very good profile (PAMPA Plans) for the G.51 or .46LA, tho there have been some updates since publishing. I'd consider hounding Larry Cunninham for a set of laser cut ribs and details of the changes.
You might also ask Phil Cartier about using the G.51 on his Giles profile. I read about somebody flying a G.51 on a Profile Cardinal, tho I'd be more inclined toward the Pathfinder (due to the 620 sq. inches of wing).
RSM's Shark 45, Hawker Hunter and Shoestring are very suitable for the G.51.
UHP's Saturn, Impact, Bear, and Buccaneer 746 would be very good with the G.51. The 746 would be easiest (another Allen Brickhaus design). Locally, Chris Cox flies the Saturn, plenty of Impacts, but no Bears. As a step up from a Skyray, the (profile)Imitation looks like an obvious choice from UHP's lineup.
And then...Pat Johnston does many of the CAD drawings for Brodak, RSM, WU and others. You might consider asking Pat for the CAD file for one of his designs (the P-51X, for instance), and have a kit laser cut by RSM or Tank's Hanger.
You could also get a wing kit from most of these, a set of plans, and build a profile version. Most these would be a huge jump from a Skyray, after all. This is an amazing time for CL Stunt. Let's just hope it lasts another century or two...

Steve
PS: I forgot about the SIG Magnum. A good flier with a G.51, if weight is kept reasonable. Tom Dixon might make you a kit for a Magnum Plus, which is an excellent design. Many folks like the Randy Smith SV-11 with a G.51, but any of his designs from 650 to 700 sq. inches would be great, and laser kits are available.