Don’t remove your vang, you need it! I would never sail a boat without one as they can spill air out of the sail and lighten the loads on the helm. Vangs do so much more but I’m not going to write a novel on it.
Correct, spread the reefing blocks out to distribute the load and balance the looks. Make sure the mast deck plate is strong as the loads will be somewhere in the 1,000 to 2,000 lbs. range (max).
If you are going to single hand with the main sheet in on top of your coach roof then you will need one of two things, an autopilot or REALLY long arms. When single handing a boat the main should never be out of arms reach when you have to take the helm. I would suggest pulling the main back to the traveler (assuming your traveler goes across the cockpit and not above the doghouse and use a course/fine adjustment on it. I believe Harken makes a nice kit.
“Greatness Is Not In Where We Stand, But In What Direction We Are Moving. We Must Sail Sometimes With The Wind And Sometimes Against It – But Sail We Must, And Not Drift, Nor Lie At Anchor.”
Oliver Wendell Holmes