Bronco,
I am renting (in Romien) - 3 bed bungalow - 5,500 a month
Electric - hot season - 1,500 a month (use 1 aircon at night only, 1/3 wall fans in day - "winter" reduce by 500 baht for lack of aircon use)
Water - about 200 baht a month (but free for last 6 months....

)
Cable - 350 a month
Internet/telephone about 900 a month (590 for ASDL, balance calls)
Waste disposal - 20 baht a month
Car - 12,000 a month (over 4 years, would reduce to about 8,000 if I had over 7 years)
Petrol is probably a baht or two dearer a litre than BKK, but tends to get slightly more expensive out of main towns.
On top of this yearly stuff like medical/car insurance but I guess that is pretty similar anywhere in Thailand.
The difficult bit is when you come to food/entertainment. Here you can spend as much/little as you like depends on how you like to live & only you can guess that.
Beer in a bar is about 50-90 baht a small bottle, depending upon what variety you drink & which bar.
Cheaper at Night Market/UD Town & cheaper still 7/11 or a Supermarket.
Falang food, depends what style you want. British "pub grub" is good at The Clock & about 160/180 baht a serving. Most other places are going to sell you a serving for between 100-200 baht, depending what you want. Thai food from 20 baht for roadside to about 120 baht for a good quality restaurant.