There are some skills that I suggest every homeowner learns in order to avoid high repair bills (in order I usually do them):-Fix minor roof leaks & repair siding/exterior-Fix water supply leaks with compression fittings or hose clamps if needed-Install lights, replace bad receptacles, switches, or breakers-Install electric water heater if needed-Fix subfloor & sturdy up framing if needed-Fix/replace windows/doors/glass and install locks-Drywall/mud, brush&roll paint-Install floor (floating/tile) and cut/install trim-Install toilets/sinks/cabinets/faucets-install mini split units if no functioning ductwork

If the subfloor is really loose/giving in some areas I would reinforce that particular area before laying new flooring to be safe

Meaning things like tile shower or fiberglass shower, vinyl floor or tile floor.  

I'll add that I once tried to use an epoxy kit to paint shower tile that was a dated.

I could have put a bandaid on as it still worked but I pride my houses in being higher end and good quality.As we continued with the house, I ended up putting in over the top finishes such as heated tile floors in the master bath and sound insulation under the hardwood floors to reduce noise transmission to basement.

I have a identical fireplace lay out in my home, wall to wall, raised hearth  (much nicer brick) and have not used it in 25 years.

You can also put granite over existing counter by removing tiles etc and paint it over. 

It also has a tile version which we will use for the laundry room of the flip.This is the laminate.https://www.lumberliquidators.com/ll/c/Boardwalk-O...The question is: should I use the same laminate in the two unit rental?

I have NOT been able to do this as much as I would like to here, and it's hurt me a bit so far.I would further recommend Option #1 on your list, and I would recommend @Craig Curelop's approach to house-hacking (IMO, his podcast on the BP Money Show and the straightforward approach he lays out is pure gold for anyone thinking about househacking in an expensive metro area).I would buy my first book on basic home maintenance before I bought my first property, specifically How Your House Works by Charlie Wing.

The thing that is concerning me is what is going on with the trade war and  whether or not it will domino its way down into real estate specifically with lay offs that would reduce prices of homes because of people losing their homes.