another new job vs old job dilemma -wwyd?

[mickb]

Have been back from mat. leave for just over a year F/T and still feel unhappy about not seeing my baby son very much during the week. I see him briefly before work and for an hour at night before he goes to sleep. I'm also allowed to work from home one day a week and get to see him a little more that day depending on work. On the whole I quite like my job and the people I work with- am not saying I skip into work every morning but job is totally within my comfort zone (which I've worked in for 13 yrs!). But there is no prospect of any further flexibility due to an unreceptive boss and fact that I manage a team.
Have been offered another job within the same co but with diff team for 3 days/wk in a new area working for a boss who seems much more sympathetic to the idea of flexible working (unheard of elsewhere in the company). Just not sure about the role because works sounds relatively dry and difficult and team seems overworked and stressed. Future boss has assured me I won't be working more than 3 days a week despite volumes. Need to make a decision quick but am not sure what to do- like being in my comfort zone but know that current role won't give me any more flexibility in the future. Am v scared to move to new area where will be steep learning curve and to undefined role and worry that I'll hate new job and will regret moving from my existing cushy no. Wwyd? If I hate the new job I won't be able to go back to a similar job to current one as are few and far between. But p/t jobs are like gold dust and this one has the benefit of being in same company so not as much upheaval as moving elsewhere. As a ps would like another baby in nr-ish future and worry that I'm being v silly moving to new job when have this in mind. Also have a nagging feeling that have failed by needing to move from f/t - p/t job as most women round me work f/t and seem more alpha female than me about it all(although accept that is silly and need to do what feels right for me..)
Any top tips on how to think clearly on this one are gratefully received....

Firstly I wouldn't worry about what other women are doing, many mothers around here don't work at all, does this mean I should give up my job to be the same ?

If I were you I would speak to future boss about workload again also try to understand exactly why he is so keen to have you, he must be very impressed with your abilities if he is prepared to offer 3 days a week.Also see if you can speak to anyone in the team to understand why they are stressed.

New jobs are always a challenge, but as you say p/t jobs are few and far between, so the main stumbling block between you and this new position seems to be perception of how hard it would be.

Thanks rookiemater.
Agree need to ignore worrying about what other people do and think as everyone's different.
Think future boss wants me to join as v overworked and is finding it difficult to get suitably qualified people in this area (seen as difficult work and not as glamourous as other areas in co.) Will see if I can speak about stress with others and workloads again. Thanks v much.