New investor- 3 duplexes opportunity

I've recently found a potential opportunity to purchase 3 duplexes on 5 acres for $275,000. All homes are in good condition with long term tenants. The rents seem low all six units are renting out for $600 a month. The property cashflows around $500 a month when taking into account the 50% rule. I feel the rents could be higher but the units are in a somewhat rural area. I have the ability to partner up with an experienced investor on this. Im trying to determine if this may be too much being a new investor and if I should start off with something smaller. Any insight/experiences would be appreciated.