First thing that springs to me is that apart from your mortgage you have no other debt which is great.
Between now and the redundancies and there on in you need to get the best deals out there for phone, tv, switch providers if you have to eg switch EBS to Bord Gais electricity or airtricity. Cut back on luxuries and get used to food shopping on a budget - LIdl and Aldi and any special offers in other stores.
Do you just have tv and broadband with out a land line or do you have a land line to - if no landline you are paying high.
You will get more than 196 a week as you should both be entitled to claim if you have stamps paid.
Start looking for work now, get your CV up to date and referees organised.
With having a fixed mortgage you will not have the option to pay off a lump sum in order to bring down payments, but you will have the money from redundancy to help with payments.