Where to live? cost? extra charges? heating systems & costs?

hello,

i am moving to Brussels this summer with my husband, i need your advises in many things , i will be working in Evere Area and will have a company car, we are looking to rent small house with 2 bed rooms and garden or terrace, i prefer to go a little bit far to live in small house with garden instead of renting apartment close to my work, in which areas i can find my request?
also i want to understand how to choose the heating system? which one is better and more economic ? Gas or Electricity ? how i can calculate my consumption and the cost of the heating? what is the price for gas and for electricity?
Also i want to buy some furniture like (Bed, Mattress, Sofa, Smart TV,..etc), any advise from where to buy those things?

Also i will bring my Cats with me (3 lovely Cats), can i find someone to take care of them during my vacations? how much it will cost? ...etc

many thanks in advance