As other members of the forum will probably tell you, the Revell
Alabama kit is actually a heavily modified version of the
Kearsarge kit and re-uses many parts from this kit, such as the
cannons - hence it is inaccurate in quite a few areas. The hull is also
too short (I think) as it is modified from the Kearsarge hull.
However, don't let this put you off - it is still definitely a very
nice kit and certainly looks like the Alabama! I definitely intend to
build this kit some time in the future, with some
scratchbuilding/kitbashing work to "accurise" it as much as possible.
The Revell
Alabama kit is certainly a much more accurate
representation of its subject than the other Revell "modified and
reboxed" kits like the
Thermopylae.
Regarding rigging, other forum members will probably be able to give
you much better advice on this subject, but if it's anything like the
Kearsarge kit, rigging the Alabama is certainly a lot of work! It has
taken me nearly 2 weeks to rig my Kearsarge model, even though I
simplified the rigging layout considerably.
If you can find another kit of a smaller rigged sailing ship
(unfortunately these are hard to find, as only big, famous ships like
the Victory, Constitution and Cutty Sark - all with horrendously
complex rigging - sell, at least according to kit manufacturers) it
might be worthwhile building this first to practice rigging techniques.
Good examples of small ships with (relatively) simple rigging layouts
are schooners, brigs, yachts and caravels, there are quite a few good
plastic kits (Revell's "Yacht America", Pyro/Lindberg's schooner
"Gertrude Thebaud" and the Heller "Nina" and "Pinta" caravels, for
example) of these around, but I'm not sure any are still available at
retail.
Rigging a ship model is not nearly as hard as it looks once you've got
the hang of it (though it is definitely time-consuming), but practice
is very useful!
Some advice on painting - with a large-scale model of a ship like this,
drybrushing and "washes" are essential (IMHO) to give a realistic
appearance, not just to represent weathering but to give a varied and
non-uniform appearance to the hull, deck planking, etc.