At the beginning of separation - advice needed

Hi, I am new to this site. Advice would be very much appreciated. My husband and I have been married for 12 years, we have two children aged 10 and 6.
We have decided to separate due to the lack of love for each other - therefore, so far we are amicable.
We have not told the children yet as we wish to get my son's 11+ (in September) out of the way first but this gives us the advantage of being able to sort things out too.
The problem is we can not figure out what to do going forward. I have been a stay at home mum on a very low income (£100/£150 a month) and we have lived off my husbands salary. We have enough equity to have a very small mortgage for me and the kids but the money does (on paper) seem to be able to spread to covering the cost of rent for my husband and living expenses for us both.
Therefore I would appreciate advice on finances going forward and how others have managed/what decisions you made but also on how to deal with the emotions of letting the family home (which I adore) go.
Many thanks in advance.

Hi. Sorry to hear what you are going through and know that there are many others that have gone through it already and made it to the other side.
I can only talk from my own personal experience but, from the sounds of it, things are amicable now and that is always the best time to get the best deal for everybody involved.
If you can budget for your expenses and get a mutually agreed sum payable monthly, that is always better than the hell of going through CMS or similar.
What you must remember, as I found out, is that a) circumstances do change and it is best to get your agreement legalised and b) this amicability may change. If it does, that document becomes a good friendbut a good dad has no problem with paying for his kids.
Factor in the cost of living, expect you or him to get another partner, expect one of you to substantially gain or lose in salary but I hope that you always remember that your children need a mum AND a dad.
Best wishes to you all and I hope it goes well.