#1 $1200 is pretty steep.
#2 There's more to it than just buying the parts. You will also need the correct equipment. I think you should shop around and see what others would charge. You don't have to take it to Ford, any shop that specializes in A/C repairs can probably do the job cheaper.
#3 Yes there are books out there but without a recovery machine, vacuum pump & gauges your just wasting your time & money. Let a professional do the job.
