I'm plenty calm...

I'm always happy to help out, but it can become frustrating to try to help someone who has had the search feature pointed out to them on numerous occasions in other threads, yet doesn't use it. It's tough to help someone who can't help themselves.
With regard to your question concerning the work, if you are comfortable working on the engine, have the shop manual and a good collection of tools (plus a couple of specialty tools), the video is a great guide to getting you through the work. You should definitely avoid bringing it to a local mechanic, and even Ford, if at all possible. If you can locate a knowledgeable SHO mechanic nearby, that would be the best route. I'd even drive several hours to have someone who knows the SHO before bringing it to Ford or a 'regular' mechanic.
If you've never had an engine apart before, I personally wouldn't recommend doing your learning on the SHO. Doing it yourself is ultimately the most cost-effective and personally satisfying option.
The best thing you can do in the short term is do your best to get as much of the oil out of the plug wells as possible. There are countless ways to do it. I personally use a 3-step process: 1. take the spray head & pickup tube from a bottle of window cleaner and stick the tube in the well and spray the oil out into a container; 2. use compressed air with a rag wrapped around the nozzle to spray out the harder-to-get stuff as well as any dust, dirt, etc; 3. take a clean rag on a dowel and wipe up any remaining residue, especially on the plug end. It wouldn't hurt to clean the wire ends and dab a drop of dielectric grease on each connector.
If you're going to take the effort to remove the intake and the valve covers to replace the seals, it makes sense to set the valve lash while you're in there. You should also plan on new plugs & wires since the oil has obviously already affected their reliability. Done correctly, you shouldn't expect to have the top of the engine apart for another 60-100K miles, so it's worth doing it right & completely when given the opportunity.