Im lying on my tummy with 20-plus accupuncture needles in my lower back and butt to treat a sore tail bone. Lots of fun. 
Feel better Michael!
So much to learn...
Well said! The fun of DIY is the learning.
You can learn the basic concepts by reading some good books.
The Loudspeaker Cookbook - Vance Dickason
Testing Loudspeakers - Joe D'Appolito
and of course, diyaudio.com has great info for every level.
Next, learn to use the measuring and simulation tools. This is really where it's at nowadays. The clarity and tonal balance you are expecting when buying such good drivers requires flat FR and good driver integration (phase, dispersion, FR.) You can guess by listening to music if it's good or not good, but you'll delude yourself and miss opportunities for improvement. Seeing the exact problem on paper and learning how to fix it is better. Test listening to changes with others is important. Your brains hook up telepathically and you can hear flaws better together than you can alone. Having friends over to listen to your system and listening to others' is the best way to improve your system and to go broke.
Another good way to learn XO design is to find local DIY speaker guys who know more than you and ask for their help with your speakers, just as you are planning to do. The biggest obstacle to the fun of DIY speaker building is the cost of the parts, so if you supply the parts, you can find people willing to share in your fun. One or two of them might really know what they're doing and you can learn a TON, because you can ask them questions specific to your problem at hand and they explain it in a way you can understand right now. But if you want them to do it for you, they might want to get paid. If you do it yourself and ask them for ton of help, they will enjoy playing Yoda for you, as long as you take their advice and go do it yourself. Gets back to The fun of DIY is the learning. Sometimes it doesn't seem fun when you don't understand. But full immersion in problems forces solutions and gives experience which is different than knowledge.
Another good way to learn is buy some inexpensive but good drivers that are popular among DIYers, that you know work together, like Dayton, etc. The SBs will work too, but that's $700 instead of $200. But the Satoris add to the excitement and motivation to succeed, dreaming of magnificent audio fantasies! Then once you have the drivers in a box you can learn how to measure them, and how to simulate a crossover with your own drivers' measurements. Fiddle with the simulator, you'll learn what changing each part does. You may not understand why but you'll see the graphs change when you scroll the values. This is how you learn what changes to make when you hear a problem with your ears. Find a solution to the sim puzzle that gives flat FR and good phase response (you learned what that means from reading the books, or web articles, etc.)
Run your design by an expert for sanity check, then build your simulated crossover using moderately cheap parts at first. Measure with microphone to see if it matches your performance predictions and figure out why not (by asking questions of your friends or forum.) When it measures good and sounds good, then upgrade the parts if you want, be aware that better parts have may slightly different measurements of their own (coils,) and different psychological effects (resistors and caps) so some tweaking to taste is always necessary.
Two parallel 7" 8ohm satori woofers will give you 95dB midrange sensitivity in theory. The neo tweeter will need only a small resistor to match the woofers. But that's before baffle step correction, so you have two choices. Use a wide baffle to lower the BS freq and add bass drivers. Or, you could just add a simple active or passive line level filter ahead of your amp to do the BSC.
