Any way around paying the very high property tax, school tax etc. in SC?  

Be sure to hold a hefty reserve to handle on-going maintenance, capex, taxes, and insurance.

It would/could be only 15% capital gains tax and yes you could/would deduct all selling costs including commissions and transfer taxes.

If you are "doing business" in CA, the LLC should register in CA as either a resident LLC or a foreign LLC. 

It is your first year when you get the major tax savings windfall due to cost segregation and bonus depreciation.

It’s definitely smart to evaluate the tax and cost implications of your funding options.

I mainly want to ask if these assumptions are reasonable and if there's anything I haven't considered:(1) multifamily units in NJ close to New York City, ~$1,000,000, 20% down payment, (2) Using the following assumptions: 4% appreciation rate, 6.5% interest rate and 5.0% refinance after 5 years, $10,000 yearly maintenance fee(3) ~$6,000 monthly rental and assume 3% increase yearly with 5% vacancy rate(4) Based on the above, the calculated IRR if selling at the 10th year is ~19% (considering tax benefits) and ~17% (without tax benefits).

Don’t want to pay taxes on the capital gain.

Tax Preparation, Tax Advisory, Accounting.

This could allow you to use the full amount for purchasing real estate without needing to sell your stocks outright and incurring significant tax implications.