Michael, I bit the bullet and removed the original rig from my Rustler 31 and am about to step her new junk rig mast.

The Rustler is Kim Holman's slightly larger version of your Twister, and in my opinion this style of boat lends itself very well to junk rig conversion. The only downside I've encountered was accepting a mast positioned at the aft end of the fore cabin, ruling out an unobstructed double berth. However if preserving the fore cabin arrangement had been a priority I could have stepped the mast at the fore end of the heads compartment and used a heavily forward raked mast angle to achieve a suitable sail C of E. I'd imagine the Twister shares a similar internal arrangement.

Other than that, I'd definitely say go for it with the Twister!

If the Corribee has a flat H&M style sail and you find the performance disappointing you could always use hinged, aluminium tube battens for an improvement at low cost.

Good luck, Michael, I hope you have heaps of fun.  It will be the best possible way to try out the rig, but don't forget that a Corribee is a very different boat from a Twister.  She  probably has flat sails, too, so don't expect spectacular performance to windward!