BABY FOOD

This might seem a little weird but I am a FTM and exclusively breastfeed my 5 month old. I will start doing baby food around 6 months but I have a few questions:

1. Should I nurse him first and then offer baby food or vice versa?

2. Starting out, should I limit his baby food intake to half a container or just let him finish the whole thing?

3. If limiting, when should I start increasing the amount?

4. Do I HAVE TO add rice cereal later on?

5. When should I start feeding him actual pees, avacados, etc?