Hey OP I hope you're cute 'cause you need to get bent; Monero forking off asics and botnets in about a week. 
I haven't mined Monero...is it worth it with 1070s? Will it be better after fork or?
I can only speculate but $3 per card/day is a conservative estimate.
I do not think that is conservative at all! I would be stoked with $3 a day on my 1070's right now. How are you reaching that number?