The easiest way to find these part numbers is to go to your dealership and tell them what you want and get the part numbers.
Once you have the part numbers, go to one of the online Toyota dealerships, such as Conicelli Toyota, CamelBack Toyota or others, and order the parts.
Or go to Conicelli directly, give them your VIN and tell them what you want, and they will give the part numbers, etc. Either use the net or phone.
Conicelli is just one dealership located in PA that's closest to you with reasonable prices.
Conicelli Parts Center
CamelBack Toyota in AZ is one I have been using cause it's close to me.
Camelback Toyota Parts
I have done business with both and they are ok, but there are other online dealerships that people use on this forum.
I did a quick looksee for the liftgate garnish/handle for your 07 SR (Dark Blue?) and the handle is $151, but it does not give me the part numbers. I did not look for the door handles.