They are not dumb questions. Moreover, everyone here has been in your situation once.
As martyntdci have stated, it's to personal preferences what oil/part to choose. Sadly, the leading reason for people in most of the cases to choose semi-synthetic oil is the lower price. But you can be sure that you need fully synthetic oil for your car.
Ford recommends coolant change to be made at every 10 years, so don't bother with it.
P.S. The list from hinggsy is very good if you don't bother to stick with OEM parts.
Personally even though ford says 10 years its just something I would do sooner. But it is completely personal preference what you do.
I maintain our family of 4 cars and always do extra when servicing doesn't cost much extra and is cheaper than a basic service from a dealer its just something I do.