I don't see what gives you the impression that you won't have to pay taxes on a $72K long term capital gain. Your question 2 asks if the gain will be "taken into account". The unequivocal answer is yes, it will be taken into account without question. For a long term capital gain you will pay a minimum of 15% tax on that gain if your AGI puts you in a lower tax bracket, or a maximum of 25% on that gain if your AGI puts you in a higher tax bracket. There's nothing "tax free" about it.
