I created a solo LLC last summer with the intention of asset protection and reducing taxes but I have no clue what I’m doing.

It just significantly reduces your expenses.

Have your landlord insurance and umbrella policy and keep your properties in good repair (eliminating/reducing risk of negligence,etc type issues).Here are a bunch of prior discussion threads on LLC and insurance which I think you will find useful. 

Of course the taxes will definetely reduce your gross profit, but the taxes should never make a scenario in which you are incurring a net loss. 

By purchasing one MF and not two SFR's , I'll be reducing closing costs and property management costs. 

With out getting into too much detail the USD has a loose inverse relationship to oil, if oil goes up in price it will most likely reduce the inflation rate in colombia which will then make the peso appreciate against the dollar.  

Every month after you make a payment your loan is recalculated and your principal balance is reduced accordingly.

Also don't forget that hard inquires also reduce your score. 

Need to maximize deductions and depreciation over the remaining months of 2018 to significantly reduce taxes.

I'm off this property for now, but will stay in touch with the seller in case he wishes to substantially reduce the price at some point and bail out.