However, without significant updates, they’re likely to reject your application outright without leniency. 

There are various applications that allow landlords to collect rent, manage payments, and disburse funds.

Is your DSCR ratio greater than 1-meaning are you cash flowing (according to the lender's criteria of mortgage, property taxes and insurance (and HOA) if applicable).

My issue is, it's been almost 3 months and I haven't be able to get good tenant applicants.

Challenge is where is their motivation to properly screen applicants and get rid of nonpayers?

Whether it applies or not it's always a good idea to check with a professional first so thanks for the reply.

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

As a fellow West Aussie who's now living in the US, I can tell you this forum and most of the training/courses you'll see online regarding multifamily investment isn't relevant/applicable in Australia.

Build a strong network of mentors and industry professionals! 

I'm currently a leasing professional at a luxury high rise complex in downtown Ann Arbor.