Cost of living in Oman

Hi to all Expats here in Oman. I would like to ask anybody who already work ang live in Oman about the cost of living. I have a job offer to work there with a salary of 720 OMR. My questions are as follows: How much will I save if I'm going to shoulder all the expenses like renting a room (flat), food and groceries for approximately 30 days, electric bill, water, LPG (gas stove), cable tv, and call card load. and secondly I'd like to know how much will I spend if I'm going to buy every day necessities for the first month e.g kitchen wares, blanket, pillow, second hand bed if there is, t.v, gas stove with LPG (liquified petrolium gas), etc. Thank you and have a good day.