SGs seem to have nice low actions[string height low=easier to fret] generally,great necks and are damn fine instruments.
Their scale length (all Gibsons) means the strings are less "tense" than a Fender/Squier and easier to bend.
But us "old fogies" may say it's better start off with a clunker ,as :
A.) Having a guitar which is tough to play strenghtens the hands [and builds character].
B.) You have more money for amps/leads etc
C.) We had to start on cheapies -why should beginners have all the luck these days. :D
As for Amps the new little Marshall MGIII series look quite good.
Accuracy,you say? hmm interesting concept..