'90 Honda Civic Ex 5 spd 190K

I slid on a patch of ice the other night and banged into a curb going
about 15 mph. It pushed the front left wheel back about 3 inches and
inwards a little; now it rubs on the splash shield when turning and the
car pulls to the side pretty severely. I haven't driven it much since
the accident (I know the rubbing can't be good), but did take it to a
neighborhood bodyshop to get their opinion. The guy said at the very
least the lower control arm was bent, but pointed to about 5 other
parts that "could need replacing too, we just won't know until we take
it apart." Pretty open-ended sounding to me.

I smell a rat. I don't expect him to know precisely what needs
replacing by looking at it for 10 seconds, but the lower $$ amount for
the repair was $450 and he was going to be charging me $190 alone for
the LCA. He said it could possibly be /many hundreds/ more. I should
have asked him if he was behind on his boat payments.

What I want to know is, what are the chances that I screwed up more
than the upper and lower control arms? How hard is it for the
semi-advanced DIYer to change these parts? I've changed head gaskets,
timing belts, brake calipers, slave cylinders and master cylinders,
etc, but I've always been a bit afraid of messing with the suspension
for some reason. If it's not a total bear of a job, and I can change
the control arms (I priced both upper and lower left arms for about
$215 on the internet) it's worth it to me to keep the car. If it's more
than ~$350, it's car shopping time. I love driving this little car, but
I really don't want to sink too much money into a beater.