I am putting a transmission and my 2007 Dodge Caliber

You did not mention which engine you have, so I'm going to guess here. You also did not mention if it was front wheel or all wheel drive. I am assuming it is a CVT. Total time takes between 8 and 9 hours "book time" to do the job. Your situation may vary due to equipment and environment. As far as fluid: the total capacity of a CVT for a 2007 Caliber is 8.5 quarts. If there is already fluid in there, add a quart at a time until the dipstick reads full.