New job - pay cut?

[Modestandatinybitsexy]

Ok so a few details.. I'm 27, University educated, and I've been working in admin for about 7 years now.

I hated my previous job and moved to a less demanding role for slightly less money. About a three grand paycut. DP moved jobs at the same time and got a significant pay increase so though I earned less we didn't feel it overall. I've never been enthusiastic about admin or the roles I've done. I dislike the daily commute and the traffic that adds an hour on to a simple journey morning and evening.

We've recently moved to a village and a role at the primary school has come up. The commute would be a ten minute walk. The job is 8.45-3.30 term time only. Even without the cut in hours (currently full time 37.5 hours a week) the pay is less than I currently earn and with the shorter hours my take home could be less than £1000 a month.

As I've mentioned we've just moved house and now have a larger mortgage to contend with. My partner is also looking for another job and another pay increase (qualified professional, likely to happen).

So. AIBU to consider this role? I've told my partner I'd like to apply but not that it's part time or how much the take-home would be. We had discussed applying before I realised the hours then I found out it was part time and applied anyway. I probably wouldn't have considered the job if I knew it was part time but I was invested and DP and I had been so excited about the opportunity.

Pros
Closer to home
Happier work/life balance
Time to concentrate on hobbies - considering a separate craft based self employment
No children to consider
More time to concentrate on getting pregnant (discusses, we both want it to happen but there are difficulties)
Good community links in the village
We wouldn't struggle to live on combined*

Cons
I feel like a won't be contributing my fair share of the income
Strain on DP as even greater majority earner
Reduced personal spending
I feel bad as I haven't discussed part time with DP.
I may feel like I've wasted any career opportunities and get fed up with small village life.
*But we would take longer to save for things we want in the future (extention, holidays...)

What do you think?

--Also, I haven't even got an invitation for interview yet and I would discuss PT with DP before I waste mine and jobs time in interview. I'm really looking for your opinion's and any experience of the above, although I realise it's rare for people to go PT before children.

We have 3dc so our situation is different from yours to start with. But I have an interview for a similar school based job. I currently work form home, so am here for the children, but the new job means school hours only and holidays off. It is a massive pull and I will be gutted if I don't get it. But 15 years ago, (per dc) im not sure I would have felt the same. At that time we were trying to save like mad so we could afford for me to take the pay cut to work at home while the dc were small. Now the pay cut I will take if I get the job will be worth it for the better balance. I will lose probably about £4k a year which is a lot when my current earnings are low enough for me not to pay tax. But for our family it will be worth it.
If you and your dp are happy with it that's all that matters. There will be lots of competition for the job but if you get it and get your foot in the door, you will be set up really well for the future.

Thanks all. These comments have been really constructive and have clarified some of the few issues I've worried about.

I think it'll come down to how DP handles it. If he's still really enthusiastic I'll go to the interview and see how I feel about the role. He knows how stressed I've been and I think he's worried about me, however he's very financially astute and this would be foremost in his consideration.

If he's even slightly worried it would worry me further. I don't want to put the strain on him. We have big plans, of which a family is one with me staying at home but also other plans we would need money for.

Anyway, thanks again