Re: Ordering custom chips
First of all, get samples from the vendors that are listed here in the marketplace.
Then, move forward.
No sense getting in a hurry and not totally liking what you have when it's done.
And, there's a wealth of knowledge already in posts here, as well as people who will answer your every question and assist with critical and helpful comments on your design and ideas.
I've seen many a 'done' designs improve 1000% once they were put on this site for comments and modification.
Good luck - you've found the right place to get help....and keep your wallet handy!