I would see a few L for a free 30 min consultation. All in the UK do that as far as I am aware. Go with your circs and assets set out on a page of A4 - plus a list of Qs to ask them.
The 2 years starts from day of physical S. Your W could do what my H did and file on unreasonable behaviour grounds. The bar is pretty low on what constitutes UB.
There is some useful info on the gov.uk site - and if you google a few of your Qs, many solicitors have good fact sheets. I recall reading some of the stuff be 'Terry's' which was useful.
It helps to get to a point of knowledge, and then you can make informed decisions....
Take care xx
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus