About the only creature comforts we added were leather furnishings, a persian rug, good internet and cable TV, and a comfortable queen bed. 

If you're concerned about them "driving off," maybe install structural steel cable as a guide?

I'm looking at an 8 unit where the cable is currently being provided by the property owner. 

Listening to a cable installer scream like a banshee after running into an ancient cat carcass in the crawlspace.Watching my realtor run out of a house we were looking at, gagging from the overwhelming smell of dog pee.

Make sure to check with the utility companies and get cost estimates from them for availability, fees, hookup charges, transformer and power line/power pole locations or relocation requirements, water, sewer,gas, cable etc You will need ball park cost estimates from site work contractors for site work, roads, installation of utility lines etc.

I understand your point about terms and conditions for cable/phone/credit card, but there are also laws about what can and can't be included in those contracts.

Reduce overhead: stop eating out, move somewhere cheaper, drive a terrible car, cut cable, sell your TV, etcMake more money: get a job promotion, work overtime, flip homes, deliver pizza, etcDetermine what is your highest dollar producing activity and do it as much as possible.

There is a cable tv in the living room, and cable tv's in every bedroom.

My 1 rental had a very high rent per room and it included every utility even cable, internet, and was furnished.

I would want an ethernet and cable in as many rooms as possible, because if it isn't there the installer will run wires for them when it gets setup, and I don't want that.