Got rear ended by a truck.?

I drive a Honda Passport and the guy who hit us was in a Dodge Ram, needless to say we got the worst of the damage busted out our rear window, dented up the rear hatch, doesnt openn now, and dented the bumper a little. The front of his truck lined up with our spare tire so I think that prevented any worse damage. Went throu all the steps as far as callin the police and my insurance n all that good stuff. His insurance called us today and said they have to find an out of state rep. to come look at our car and when they do they will call us. (guy was from OK and we are in MO) So tomorrow morning i am off to get my own estimate on the damage. ? A: how long is it gonna take for my car to be fixed? i dnt have renters insurance so im driving without a rear window right now. B: are they going to send me a check and reapair is up to me or are they going to send my car to their own shop and pay them direct? C: what if my guys estimate is diff. from the insurance guys? and D: car is only worth abt $2000 so if its estimated that repairs will be more than that does that mean they will consider my car totalled? and finally E: Some things were ruined due to rain on our drive home, we were on vacation so had lots in the back of the car and had a long drive home, is there anyway i can get compensated for those things. it was my lil girls stroller and her pack n play, (expensive gear that now is mildewed) any answers would be appreciated.