Hello..we have a 1989 Buick LeSabre Limited 3.8lt

Yes, thats right..1989! lol
I checked other threads on this, but all wrong make/model year, so i have to post.
Just had CV axles replaced, & allignment
Was told tierod ends are worn..we can replace them easilly ouselves.
Issue is allignment shop told us strut mount bushing/bearings are worn & should be replaced..car has just over 300k on it, but was a free car & runs awesome,body solid & we know original owner & car was miticulously maintained.
We will be replacing strut mounts in spring, once snow is gone.
Is this an easy enough job for us do-it-youselfers? My hubby & I are mechanically minded, can do almost anything, have lotsa tools, manuals etc.
Has anyone ever replaced these? If so, what are some tricks/ideas..possible issues etc??
The strut towers (under the hood/inner fenders) are immaculate, no rust etc.
Assuming we'd have to get another allignment once replaced?
Any thoughts/pointers GREATLY appreciated