Heck if I know but I'd guess
I don't have a 135 or roller cruising as my boat is set up strickly for pottering around. I only use a self tending working jib and a no batten, no roach, no headboard cruising main.However if I was to set up with racing in mind there are some things I'd add along with the roller furling 135. The first would be a set of Adjustable tracks for the genoa blocks. I've seen some boats with two sets of sheets and two sets of tracks. For average power settings you have the sheet pull along the LP line of the sail. To power up you move the block forward on the track. To power down you move the block toward the stern.On a boat with out a furling genoa and without tracks for the blocks you can often get each sail to set properly with the same set of blocks by using a pennant at the tack of the genoa. While adjustable pennants may allow you to keep the proper sail trim as well as track for the blocks they have a major drw back. They raise the entire foot of the sail away from the deck. While this improves visibility for daysailing and is highly recommended for cruising, racers want the foresails to sweep the deck so that very little air spills under the sail. Wheather you go the old racers way of three headsails and a full spinnaker or the new racers way of a roller furling jib and a cruising spinnaker, I think I'd put on tracks and set up adjustable Genoa leads before I'd ever add a traveler. But The main thing that surprises me about boats like ours is that they are sold without a whisker pole and without the ring on the mast to support a whisker pole. Without a doubt a whisker pole is the first upgrade a stock boat needs. You can make one that works fine from and adjustable boat hook and a kit from west marine. Total cost is aboat fifty bucks. Downwind performance inmprovement is amazing.This is all just my opinion which I expect does not amount to much since it has been ages since I have raced. Racing technology and preferences change so fast, you'd be smart to find the Hunter Class Race winners and ask them. Most racers are pretty free with information on the basic set up you'll require.Have FunFrank Ladd