New h1b: Any restrictions on the employer filing petition?

[JayL]

Hi, I am currently on H4 visa. My previous employer (in India) is willing to sponsor new H1B in April '13. This is a startup in USA with development center in India. It has around 15-20 employees in India and 5-6 employees in USA. Company location in USA is San Diego and I live in bay area, so I would like to work from bay Area, visiting SD office sometimes. My query is - is it feasible for this employer to file h1b for me in coming April? Are there any restrictions on the employer? (like headcount, turnover, etc) Secondly if H1b can be done, will I be able to work from other city? What are the chances that such case gets approved by USCIS?
Looking forward to some info in this regard. I am new to USA and not sure if I should wait until April '13 or search for other more reliable options well in advance.

[immihelp]

As long as the job is genuine and they can pay you the prevailing wages, smaller employer is not a problem. Working in a different city is not a problem.