$750 is a good starting budget, especially since it seems you might have plenty of lumber around to make it happen. I think fixed bridge and dual bucker are both good choices.
I’ll second that parts of making necks can be tedious, and of course the tolerances are tighter there than anywhere else on a guitar, but I certainly wouldn’t caution against making one! It’s not rocket surgery 
I’m personally more process than jig oriented, and my method (which isn’t terribly unique) doesn’t require a lot in the way of specialized tooling, especially if you’re only preparing for a single neck radius and don’t have to be ready for whatever someone brings in.
These are my most frequently used non-cnc related specialized neck tools, to give you an idea what you’ll be in for.
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Radiused fret caul - typically used with an arbor press or other clamping implement. You’ll only need 1 if your necks will be the same radius. This should run you $20-45.
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Fret dressing file(s) for the ends of installed frets - These can be found really cheap. $10-15. Spending more nets a nicer file, but it isn’t necessary. You may already have metal files that suffice.
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Fret snips - self explanatory. $5-25
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Fret Crowning file to shape the tops of the frets. I use a stew-mac Z-file. It’s expensive ~($100), but it’s by far the best solution for crowning frets in my experience. You can find crowning files and systems much cheaper. Many will work fine, and people have crowned frets for decades with them. I can’t recommend any specifically, though, because I don’t enjoy using them even a little anymore. Typical ones range from $15 on the low end to $50 middle of the road.
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Radiused sanding block. You could make your own or buy one. Either way, it makes for a nice smooth finish with no variance on the fretboard, and can also be used for a fast level on frets before crown and polish. $5-10
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Nut files. I recommend just buying a pre-slotted TUSQ XL nut, they’re usually pretty good with the string gauge channels, and can mostly be setup from the back. $15-25
Everything else is regular woodworking tools. You’ll need either a fret-saw or a ~ .58mm (0.023") end mill to cut the fret slots. I use these endmills for fret slots.
That should give you a pretty decent idea of what you’ll want or need for additional tools. Of course, no rules; Some of these are luxury or productivity items. You can tap in frets with a mallet and level with a regular sanding block if you’ve got the gumption.