please put my mind at ease

[w513mfs]

hi all as per above title i'm looking at booking a fly drive with BA which includes the car and need my mind easing regards insurance.

it says along with avis rental it provides the below:

Exclusive car rental
Your rental price INCLUDES - Unlimited mileage, Customer Facility Fee, State Surcharge, Tire & Battery Fee, Veh. License Fee, Third Party Liability (TPL), Collision Damage Waiver (CDW)

i usually book my own car and am very confident in doing so but this time i'm having a worry

so my questions are

1) is this all i need ?

2)i cant see SLI ( but im assuming thats the same as TPL)

3)also am i right in thinking that if i was involved in a accident i would have no charges not even excess because of cdw is that right ?

the wording on ba website is a little confusing ?

many thanks for any help in advance