I just changed my Struts today. The top rod nut I held that big washer thingie with large channel locks and the impact spun them right off. The lower two were a pain. The impact gun didn't do anything with them. This is what got them, a 13/16" box wrench holding the bolt head. 15/16" 1/2 drive socket, 18" breaker bar and 3' section on 1' black iron pipe over the breaker bar on the nuts. Then it's fun compressing the strut, then holding it compessed with one hand while you put in the bottom bolts.
The first side was like 1 1/2 hours and then twenty minutes for the other.
the lower retaining nuts are torqued at 140-200 ft lbs a box end wrench and a big breaker bar as suggested above. the upper retaining nuts are torqued at 40-55 ft. lbs. so they should not be as difficult to remove. and goodluck.
The easiest way is to remove the entire rotor and brake assembly, even the dust cover - remove that too. That way you can get to it and have enough room. If you're not lucky enuf to have an impact gun. Use your regular breaker bar, if you to poor for a breaker bar - like me a college student. Use a reg rachet and find a hollow pipe like from a fence post (any hollow pipe will do) place the pipe over the rachet and have yourself a big'ol breaker bar. Worked with no effort as I found out. Lube it up with wd40 first though. Sometimes it does help to tighten just a little to break rust up and then trying to remove it.
FWIW, you shouldnt need to remove the rotors. Last struts I did were with SN95 brakes and it was not an issue. Turning the wheel to one side of another does help though. I'm just trying to save you some work (esp something you are unfamiliar with).
I'm thinking you might not have turned the steering wheel to one side to help access the bolts.