Always discuss with an attorney before leaving the marital home.  If you have children and custody has not been resolved, leaving the home can have negative consequences. In addition, if you have not resolved your issues of support, you may create additional financial burdens.

A forensic accountant can help you determine how much your spouse earns as well as value the business if you do not know that information. The business may equitably distribute the asset in the divorce case if the court finds the business and income falls within the parameters of marital property.

Marital property is any asset acquired from the date of marriage up to the date of the filing of the complaint, or an agreed upon cutoff date. Marital property excludes inheritance and gifts from a person other than each other. Separate property may be subject to equitable distribution if it has been co-mingled with joint [...]

If you are dependent on your spouse financially, they are obligated to pay your legal fees. When the income is not enough to cover both parties’ legal fees, the court will order the counsel fees be paid out of joint assets or tax refunds.

A prenuptial agreement may be in your best interests. Unless carried out properly, they are not always enforceable.

A contested divorce takes about a year to resolve in New Jersey. If you cooperate and resolve your issues, you can enter into a settlement agreement and get a divorce much earlier.  

Leaving the home would be a bad idea. You can lose the right of occupancy. you may have to support a second residence. If you have children, you are most likely giving your spouse primary residential custody of the children.