As always, the question is too variable. if you don't have access to a guarnatia and you're only planning on being here a year, you would need to rent a furnished apt.
Short-term rentals for nice, furnished 3 BR apts in Capital won't be cheap. I would guess you would be looking at least 2000 USD a month and I may be under-estimating. Renting an unfurnished apt is much cheaper but not an option for you since you would need a guarantia and furnishing it would be expensive and standard lease is 2 years.
House is suburbs for me wouldn't be realistic since you would need a car.
Health care - I assume you will keep your insurance in the US since you are planning on returning. So factor that cost. Additionally, you would want insurance here. If you get a private plan, for a family, for a family of 3, in OSDE 210 (lowest level), you will be paying 2000 pesos a month effective this August.
Speaking of costs - do you have on-going expenses in the US? Mortgage payments? Health care? Credit card bills? (not to answer me but just something to factor in! I had a friend who budgeted for his expenses here, completely forgetting he had bills to pay back in the US as well. His money ran out a lot sooner than he anticipated!)
Traveling is expensive. Your average tix back to the US will be 1500 USD. I just flew to Colombia 2 months ago and my tix was 600 USD r/t. Even within Argentina, if you are a foreigner, flights are not cheap.
Domestic help will be much less than you are paying in the US. That's a huge savings.
You'll do fine living on the salary you have. I would definitely not say you'll live like kings or queens but you'll certainly be okay.