Due to other uses such as furniture making, I have a full woodshop at my disposal. When building guitars I use the same setup everytime though. I use my old Dremel Moto Shop scroll saw to cut the body. I prefer it over my band saw cause its easier in the tight curves, plus if it ever breaks down you can buy em' used on ebay for about $20-25. Quite a bit cheaper than replacing my bandsaw. I use my spindle sander to finish the edges of the body. I use my Delta floor model drill press to remove most of the wood in my pickup and control cavities and neck pocket, and for all the normal hole drilling. I then use my old Craftsman router to finish up all the cavities and neck pocket and for the truss rod channel. I use my Delta table saw for the fretboard and my Delta bandsaw for the neck. If I am making a carved top, I use my router and route steps going down to the desired depth and use rasps, sureforms and such for the final shaping. I use all hand tools for shaping the neck too, rasps, spokeshaves, sureforms and sanding blocks. I hand sand everything except the edges of the body because those need to be nice and straight. I know they were building guitars before the invention of electricity, but I couldn't imagine building a guitar without a router. It is a very important tool for all woodworking projects.
If you really want to buy all the things in your first list, I say go for it. In the end, they will save you considerable time in the building process and you can use them in the future for many other projects as they come along. Before I bought my table saw, I had turned my $40.00 Skil Circular saw into a table saw. It took about $30.00 worth of 2"x4"s and a sheet of MDF and some other various parts, but it worked very well. It was a little difficult to adjust the blade height and angle, but still served its purpose. The only tool on that first list I would not get is the Dremel. I would definitly replace that with a decent router.
BTW, has anyone seen that show that comes on PBS.... The Router Workshop. They build everything completely with a router. I watched them build an entertainment center with nothing more than a router. Great show.