With regards to single-handing... I single-hand a lot, and even when my fiance' is on board, she has finally realized she can just relax and enjoy the ride.
The stock jam cleat provided for on the jibs is NOT ideal for single-handing. A huge improvement is to replace those with Qucik-release cleats or clutches for quicker release from across the cockpit. I currently use Spinlock PXR clutches, but recommend that if you elect to use those DO NOT use the Clutch's recommended max-size line for your sheets. From experience, the sheet is slow to move through the clutch; there is a lot of friction. I am considering moving to a more traditional cam cleat for my jib sheets, as I do not want to go to a smaller sheet...
Size your jib to the conditions so that the coaming-top winches are not necessary for tacking the jib. Not having your sheets spooled up makes for a quicker dump. With cam cleats, a quick snap of the sheet upwards is all it takes to de-power a jib.
When out in heavy air, my standard practice is to have the mainsheet in hand, with the jib sheet lying across my lap. If I heel too bad, and get that "uh-oh" feeling, I can quickly release the main, "pop it and drop it" and then pop the jib sheet.
Move as much control to the cockpit as possible. I have halyards, the vang, cunningham, and reefing all led aft. This keeps you from going to the mast or going forward.
Clutches in front of your cabin-top winches (if you are equipped that way) allows the winches to multi-task, as you can un-load them after grinding. Additionally, the quick action of the clutches, (flip a lever and let the line fly) is sure a nice way to drop a sail in a hurry. A downhaul will help get the jib down and help keep it down.
A well-thought-out update to the rigging is an excellent first step but it is a tiny part of it. Go out and PRACTICE it all, raising sail, dropping sail, reefing, tacking, and get real familiar with your new rig so that it becomes second-nature. Familiarity breed confidence and will help you out a lot. Besides, practicing is sailing, huh?
