Although I don't know the details of your geometry problem, in general a lot of such operations are difficult without a drive-over service trench or lift. I have found sufficient access by jacking under the lower suspension member - usually directly under the spring - just enough to remove the wheel. Block and repeat on the other side. Access is usually sufficient then to tighten the bolts as needed on most vehicles, to the point they will not shift when the suspension is later unloaded. Then jack high enough to use a torque wrench.
If this still won't allow access, then have all retorqued when you take it in for alignment.
'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7