For the state taxes, if you add the amount allowed for real estate taxes, state and local taxes and vehicle registration fees you will find the total is $10,000, which is the total amount you can deduct on your federal tax return for taxes.
The mortgage interest deduction would be limited based on how much your mortgage balance is. If it is over $750,000, the deduction may be limited.
Also, if you rent out a portion of your house or have a home office in it, then a portion of your mortgage interest may be used for that, thus reducing the amount deductible as an itemized deduction.