Whilst that may be great for you - it doesn't work if you don't have an engine to leave running..
Raising sails: Your plan is as good as any I've come across and, yes, the key is to be able to get the sails up and down without too much struggle. Certainly the only way to do it is pointing into the wind. Some boats (like mine!) will allow you to do the following:
1. Unfurl the genny, get some way up on a close reach.
2. Heave to (ie. tack without touching the sheet, helm down)
3. Hoist the main
4. When ready, tack the headsail and sail off into the sunset...
Lowering sails: Same as coming into the dock under sail.
1. Drop one sail whilst sailing close to the wind on the other.
2. Get the other one ready to drop (lines clear, etc.)
3. Drop the other sail in a rush when needed.
It's valuable experience and worth practising!