Your founding location will not necessarily determine your funding location. That is, founding your startup in NYC does not mean that you cannot eventually get funding from west coast investors.
However, it will obviously always be easier to make deals with founders closer to your geographic location just for simple logistical reasons. So if west coast investors are what you are after, you may consider spending some time on the west coast to meet and get in front of some investors. Operating out of NYC may be a little inconvenient, but it can still be done with weekend trips to the west coast.
When you are ready to raise funding, I invite you to check out LawTrades. Our attorneys have experience with all areas of fundraising and have helped all types of companies make and carry out deals with investors. Visit ourto see how we can help you!