Kevin,
The most pattern like IMAC legal scale plane I know of is the Columbo Anderson Extra 300L. This plane is stretched to the max. It still has larger control surfaces than a pattern plane, but smaller than most out there today. This is not a plane you'll see everyday, as this super stretched, style is not in vogue these days. It flies faster, and less floaty than people seem to want right now. More like a pattern ship, it draws great lines. It comes in a variety of sizes, from 27% all the way up to 38%. Bigger does fly better, so based on your request, I would try the 34%, it should be perfect with the new DA-85. You should be able to get it in around 22 to 23 pounds with the DA-85, so it will have great power. Everyone else I know who has one, has a DA-100 in it, but the 85 was not available when they built theirs. It is not widely available in the U.S., but the good news is that AeroWorks is clearing out their inventory of this model so it is on sale. Unfortunately, they are out of ARFs, but have the almost ready to cover, and kits available. At under $500.00 it is very inexpensive for a plane of this size.
Take a look here:
http://www.aero-works.net/store/detail.aspx?ID=198
Steve