It is not as intimidating as it seems.
The front three are pretty easy.

Be sure you know where the ignition cable go as you take them off.  You
may well damage them anyway.  Sometimes they are stuck on so tight that
it is hard not to destroy them..

Those engines have an upper engine restraint system that is normally easy to
get to.

When you remove one of the bolts, the entire engine can rock forward to give
you access to the rear plugs.  The restraints I remember often have a second
hole where you can install the bolt to hold the engine in the forward
position,
but dont know if all of them do.

You want to be careful with things like windshield washer reservoir, and the
vacuum cannister, which could be damaged if you lose grip, slip up, etc.
(I once broke the plastic hose nose off the vacuum cannister and ended up
taking it out, drilling, and fitting a metal one.).

The back plugs are still sometimes a little hard to see and get onto, but if
you
have a decent set of wrenches and are patient, you can do it.  Be careful
you
don't cross thread them when you go back in.  Since you may not be able
to see or feel them out easily, go easy until you are sure you are right.

This is from memory, as I haven't done it in a while, but I think that if
you
work carefully and thoughtfully, you will find it pretty easy.