I plan to re-do all the sheet rock and kithen cabinets etc on the first floor.

What are the best color combinations for the kitchen cabinets and countertops that will be the most appealing for future tenants?

Looks like you completely redid the kitchen (cabinets, counter, appliances, flooring), and paint and carpet in all the bedrooms for under $20k.

Completed rehab on which introduced open concept kitchen, installed can lighting, interior and front door replacement, kitchen cabinet and appliances, bathroom update and interior painting.

Introduced open concept kitchen, installed canned lighting, interior and front door replacement, kitchen cabinet and appliances, bathroom update and interior painting.

Introduced open concept kitchen, installed canned lighting, interior and front door replacement, kitchen cabinet and appliances, bathroom update and interior painting.

You don't have to itemize right down to 27 cabinet knobs if the "scope" of the kitchen with "all necessary knobs / pulls" is included. 

It's hit and miss, but we've found some incredible deals on brand new fixtures, flooring, cabinets, counters, appliances, etc.

Complete remodel - roof, stucco, windows, doors, trim, granite, refinished kitchen cabinets, lighting, bathroom vanities, toilets, surrounds, flooring, paint, termite treatment and repair, finished the garage, new landscaping, restored the pool with new mechanicals, new furnaces & water heater What was the outcome?

I'm gonna make a lot of assumptions here just to prove the point that I think your Contractor's quotes of $70k to $80k seem fair.Roof - 30  SQs x $300 to $400 /SQ = $9,000 to $12kKitchens (assuming rental grade cabinets/counters & appliances) - $6k to $8k each x 2 kitchens = $12k to $16kBathrooms (assuming rental grade finishes & fixtures) - $3k to $5k each x2 or 4 bathrooms?