I'm not sure that is great advice. The required transfer amount is 5x the minimum salary, which for February is 346,800 ARS. So 5 x 346,800 ARS = 1,734,000 ARS = $1229 USD (at 1410). I am not sure why you are recommending nearly double the required amount. I don't know if your basis for 2 people?
My point was for 1 person, the limit is around 1230 or so, so if its done every 2 months it is 1460. You stated 2500 every 2 months, so that is about 1250 a month. I was suggesting that it gets closed to the limit, especially as the amount increases monthly in ARS but also the official exchange changes quite a bit (at least this month), so I was just suggesting to keep that in mind.
Obviously if you spend more, its not really an issue, but otherwise, I don't think transferring much more than what is required makes a difference. I think the whole point is just to show you are self sufficient and not a burden to the state.