You really need to get a hold of
Useful Measurements and any other building references you can get, or spend some serious time on Google searching. The first is cheap enough for any budget, but you should be able to get plenty of information on inter-library loan if your local or school library doesn't have anything.
-Are the string spacings from the center of the E string to the center of the G?
The book does not say, but I would assume center-center. Any edge-edge measurement would depend on what exact strings were used.
-Is the fingerboard height projected to the bridge the height at which the FB would meet the bridge if it were extended all the way? If not, what does this refer to?
Yes. If you put a straightedge down the center of the fingerboard, it would be 160 mm over the top of the soundboard at the bridge. Note that the bridge will actually be taller than this because the strings hang above the fretboard, diverging from the nut.
-Doe the top and back follow a certain dome radius, or does each luthier have his own preference?
-What height above the rims (sides) should the top reach at the point where the bridge is located?
The top and back are carved into complex arches, nowhere even close to a simple radius, and the arching varies significantly between luthiers. The thickness is not uniform, either. Even Stradivarius rarely made 2 instruments with exactly the same arching. In general, from the edge towards the center, the top dips down and becomes thinner just beyond the purfling in an area called the recurve, then arches up toward the center.
There are some small pictures of cello arching here, which may give you an idea. A bass, will, of course, be thicker, and the shape may be slightly different.
http://www.guitarplans.co.uk/CelloPlan.htm
I now see I was reading the wrong table in the book. For a standard 4/4 bass:
String spacing at nut: 30 mm
String spacing at bridge: 80 mm
(and it says "divide into three equal parts long arc to locate strings 2 and 3." so that appears to mean string centers)
FB projected to bridge: 150 mm
String 2 angle over bridge: 148 degrees (or 74 degrees to either side of the bridge)