As for managing them remotely, you are going to need to have in your smartphone address book the names and numbers of reliable contractors and/or handymen that can take care of things as they happen. 

How, when and if the deposit is transferred or credited is already dictated in the lease.

It sounds like you have already done this part and came up with an investable amount.The end goal - This is usually something like $10,000/Mo. income, in present value dollars.Time frame - The shorter your time frame to reach your goal, the more initial capital and credit you will need.For the rest of this post, I will assume that you want to create a reliable passive income stream that you will not outlive.

Osborne, look to complete a balance transfer on those credit cards to one with 0% and pay them off ASAP. 

As for the management company, the key is to find a reliable property manager which is harder than it sounds and the choice are dependent on a type of market you're in (smaller markets typically offer fewer choices and etc...) 

there are some positives, but many negatives to them, you should get a ratified deed up front, be aware that the lender could call the loan, be sure the seller will fully cooperate when it is time to formally transfer, seller could circumvent you at the wrong time, borrow against the potential equity or just say "forget it, i have a cash buyer"!.

I would encourage you to ignore complaints about transfer duration because that is uncontrollable by the company. 

It may be too late now if you already shot your credit but one thing you can do is open up more credit cards and keep rolling 0% balance transfer offers to various cards. 

The tenant that is month to month you could negotiate a new lease as soon as you transfer. 

I want to invest in real estate in Poland because the local market is quite reliable and prices are affordable but still growing.