My best advice would be to network with others in Europe to really tackle these parts of the equation. 

I didn't tackle the flip until much later.  

3) Have go-to person / handyman who can tackle most repairs.

See if you can identify the species and read up on the best methods for tackling the issue (see link below).In the meantime (before move in), I would get the over counter traps (little black ones) designed for roaches and put them under cabinets, appliances, etc (blue tape can hide them on the near walls of cabinets or back side of appliances).Then I would get the peanut butter type product designed for roaches that is in a syringe and inject a small dab into nooks, crannies, even inconspicuous places (like inside wall plates).Sprinkle some boric acid based powder (often with a sugar/flour or pheremones) under appliances, behind them, around the hot water heater, etc.

That answer can vary widely, so I'll leave that to the pm's in this space to tackle, but you can bet that these three items will be there: lease-ups, "fees", and repairs, repairs, repairs!

I have an idea what I would offer but sometimes it's what you don't know that changes how you look at a problem and tackle it.

@Chaston Farris mobile homes are tough to tackle.

My G/C just so happened to go to the property the next day to tackle a quick repair and called me and told me there was some water in the basement but nothing major.

I'm putting a blog together encouraging people to tackle ADU and granny flat development.

You better have a some good experience under your belt before you tackle dramatically changing floorplans.