Thank heavens for MrsBert.
SM is possible but is driven by needs so OP will need to show what her needs (he will have similar needs) are and then determine what joint money is available to meet the needs.Its about the basic lifestyle that the children will have with each parent.
I don't think it's possible to say if SM would be awarded until needs are known OP.
I would say to posters who don't agree with SM.It is awarded where there is a major disparity in income.Often women have been unable to work, progress careers, due to their husbands controlling or abusive nature.I was a high earner but pregnancy complications and complete lack of support from stbxh meant my career wasn't possible.In hindsight I should not have trusted ex or had dc with him but he didn't wear his abusive mask until I was vulnerable.He was also very manipulative.An example he would not "let me" put money in my pension as he had a good pension so no need, my money went towards the house.Now of course he can tell everyone how I am after his pension.
Judges and courts thankfully recognise that women are impacted by having children, even if it's unconscious bias in the workplace.Add controlling husbands then women's income are generally lower.
SM is a way to acknowledge that.
I had similar views about SM before I was in my situation.I now know I was very naive as not all marriages are supportive.
OP, what are your housing needs?