If you file H1B , your spouse can apply for H4B. Since H4B is not allowed to work, she can not even apply for SSN too. She can apply for work authorization just  before she gets GC, thats a lengthy process. Thats why I suggest you not to marry any person thinking that the individual can get work authorization.

One more thing ,related to this topics. Since she can not work she will demand you hi-fi life as you start working as a H1B. If you just get H1B through Dhoti- consultancy and suffered a lot without getting a job. In most the cases they will revoke your H1B and you have to fight for status.  Then she will get depressed and your marital life could be ruined.

Anyway, good luck.