I think you've got yourself a good plan there and yes it can be saved. All marriages can be saved, I believe a lot of it depends on the state of mind and how far gone the WAS is.
Thinking back, I've had threads and my W even contact a solicitor like about 4 years ago and being the DAM I was, I told myself it was just her over reacting to an arguement as the issue argued about was nothing (to me). However, and what I've read in 'We Can Work It Out', all those little things have been getting stored up then bam !!!!