With that weight and wing area, it should do a clean pattern, probably on 40' lines or so. The C*x Super Stunter Me-109 was 165 sq.in. and weighed 10.5 ounces, and didn't have flaps. It could just be coaxed through a pattern, but the maneuvers tended to be oversize. Your Twister should be much better.
By comparison, the Baby Magician in Flying Models some years ago had 230 sq" and weighed 10.5 ounces. It would fly a competitive (to anything!) pattern.
The Sky Sport, just published in Flying Models, has a 180 sq.in. wing and weighs 8.5 ounces. No flaps, though. Bart K flew it to well over 500 points in the recent Knight's joust on both flights. This was in competition with .40 size Profile models!
Lee Strickland scaled down the Ringmaster to 250 sq.in. and came in at 11 ounces. I have yet to personally see it fly, but have had reports that it is excellent.
One thing people don't realize while scaling down models is that the wood sizes need to be reduced from the scaled down size! If a 60% model scales down to a 1/4 x 1/8 spar, use a 3/16 x 3/32 size. The models get relatively stronger as you shrink them, and the weight MUST be reduced.