If you like you can also hire a termite inspector on your own to come out and inspect. Generally the inspections are free. You can also contact the inspector on the report you were given and ask him to come out as well.
Would have to know more about the situation before I gave a yeah it is okay. Depends on the where the damage is and the extent of it. 4300 is a little more then average, I would presume about 2-3k for the tenting and the rest for wood remediation. Depending on the type of roof you may want to make sure they purchase the roof insurance when the tent so that you don’t get stuck fixing broken tiles. Go up and take pics of the roof before then tent as well so you know what it looks like.