To help you along...

You have a plethora of resources available.  Use them.

Tips on a safe exit are:

DO NOT threaten to leave, EVER - don't threaten to do anything as a threat to an abuser is a direct challenge of their control

DO NOT attempt to negotiate - there is no such thing as negotiating with an abuser.  Attorneys are paid to speak on your behalf

DO NOT involve your family members in details of your exit or divorce proceedings - general and vague comments are okay, but they don't need to know because they might be coerced into talking to the soon-to-be-ex-abuser

DO NOT tell "mutual" friends about your experiences or any plans to leave - most abusers present delightful outward personnae, and "friends" that know you both are HIS friends

DO NOT attempt to exit without help from a local organization

WHEN YOU ARE READY TO LEAVE, do not pack ahead of time and take ONLY those things that are 100% necessary - personal documents, birth certificates, SS cards

CLOSE OUT all accounts the day-of the exit

TAKE THE COMPUTER that you use - if he has money, as you suggest, he can hire a forensic technologist to determine all of your use of the computer, even if you have deleted files

PACK AND LEAVE only when he has left and you know that he will not return for a long while

DO NOT answer any phone calls, text messages, emails, etc........NO CONTACT, under any circumstances

DO NOT leave any indication of where you are going - if you need to have mail forwarded, get a Post Office Box in another town

Most important of all, call one of the hotlines that have been provided for you.  Get a solid understanding of what you need to do to save yourself and your child. 

Again, best wishes to you.