Very easy to change the motor mounts out after removing the motor from the car (joke but true).
I attempted to do it once in my driveway. I gave up because once the motor and the car was well supported from below, I could not move around arround under the car. If I had it to do over, I would use a fender brace support to hold the motor up (same kind the front wheel drive cars use). Then the area under the car would have been free for me.
Optionally, the motor could be supported by attaching to something strong over head (tree limb, beam, ect).
What ever method is used to support the motor, you will need to ability to adjust the motor during the job. A good selection of sockets, wrenches, stubby wrenches, crows feet, and lots of patience may be handy.
The big bolts on the motor mounts are best accessed after removing the wheels.
The other lesson learned regards the top bolt on the starter. I found it very difficult to remove. Later I learned that a 13MM flex socket and a very long extension will actually make to job doable.
Note, the Chilton's manual calls for the starter to be removed. The Ford service manual does not. You may find it easier to work on the right side with the starter removed. However, removing the starter is a fair amount of work.
IMO, the job is doable for the well motivated slightly above average shade tree mechanic. Some of the areas will be difficult to work in. Take it slow. Get a Chilton's manual.
OBTW, the Ford service manual lists the job as taking 2.1 hours with a skill level B. This puts the job as a Medium.
Good luck.