Hi all, hoping for a bit of help with my car as it approaches mot

I do circa 3k miles a year in my stilo at the moment (its on 56k at the moment) a 2002 1.2 with every option allowed on it at the time.

anyway my last mot was in january with 53500 on the clock, advisories were:
exhaust mountings split
tyres worn (sorted these)
rear radius arms bushes worn
rear brake pipes corroded
slight play in n/s bottom ball joint

plus i have the airbag failure stop engine thing (everyone has had this i understand?)

its going to a family friend on thursday (he owns a garage) and am just wondering if anyone can help with how much i should expect this little lot to cost to sort if it means a failure in current state?