First post, sorry if I miss anything, I'll try and be as clear as I can.
My DSs (4 and nearly 6) have always had me home as after my first maternity leave the business I worked for closed down and my eldest was only a year old when I found out I was pregnant again.
Since my DH works shifts 4 days, 4off, 4 nights it was great as we had a nice amount of time together as a family especially if he took holiday- 12 days off in one block.
His job meant we were financially ok but sometimes going into overdraft and had to be careful with money. He didn't want me to get a job before because he felt my job was to be looking after the house. I do all the housework and child related things for school, paperwork etc. He does any DIY that needs doing as that is what he worked previously before his current job (which he hates due to some people he has to work with at times)
I have now been offered a job starting beginning of January which is perfect as it's term time only, working at a secondary school in the field I studied for, he was great when I first went for the interview and told his family I got the job, praised me etc.
The job is full time meaning I had to ask my friend (discussed this before even attending the interview and she will be paid for it) to take DSs to school with her son (DS2 best friend) and pick them up, meaning they will be with her for an hour in the morning and just over one hour after school. No alternative such as breakfast or afternoon club available at the school. DS2 will have 30 hours funded hopefully but at the moment will have to pay for the extra sessions. Pick up/drop off is only needed when DH is working and due to work pattern it changes every week.
Now less than a few days later he keeps arguing with me saying that I only took the job sonthat I don't have to do the house work, that I expect him to do it all in his 4 days off (I never even said anything as I knew it would cause arguments) I suggested we do things together as we are a team but he kept saying how I want him to do it all even though he will be working more than me! 
He said that DSs are and always have been his priority and I'm letting them down and they're pushed from pillar to post and dumped on my friend and he is not happy that someone else will be taking them to school as no one is better than a parent.
Another argument was that I should have just gone for a PT job term time but when I pointed out that I've been looking for one for over a year and there aren't any he just said he told me there wouldn't be. Or gone for a better paid FT job (wouldn't be able to as been out of employment for 6 years so limited experience) so he can go PT. my job is paid better than other local alternatives and being term time childcare in the holidays won't be an issue.
He has taken all excitement out of starting the new job as I know he will keep complaining about it and starting arguments but praising me for it in front of other people so he doesn't seem unreasonable to them.
Not sure if AIBU for wanting to start work or is he being unreasonable?