Thank you for your replies.
Right now, my rent is about 1700, with insurance, parking, gas, car lease payment (I know), gym, and utilities, the fix expense I calculated to be about 32-3500. I personally spend around 1k max on living/food, but given an SO on other coast, most of my expense lies in plane tickets. let's call that 2500 so I'm guesstimating a monthly expense of around 6k. I know that number is not very mustachian, though as a percentage of my income, I like to think it's pretty good. My take home is right now around 21k a month, but with my side hustle, I hope to add another 3-6k in cash flow (1099 income)
In term of the future, I don't anticipate a move back to NYC. My SO works in fashion so there're only a few places where she can work. NYC, LA, maybe dallas or seattle. Job-wise, I think florida or texas seems more reasonable and with no state income tax. For this reason, I'm basically planning to save up to 20% of downpayment. I don't know the market in those area, but I think something like 450-500k seems very reasonable.