memph - in that game, you are trying to sell your experience and your contacts, not what gear you have. generally, sound equipment is rented for film projects by the production company, so i dont think you really need to invest in gear unless you plan to work on indie movies with no budget, in which case, you have a basic set which you can expand upon as you see specific needs - and even there, it is often better to rent exactly what you need for certain shots rather than purchase outright.

also, you will potentially make much more money in foley and post than as a sound guy.