First off what do you want?
What does he want?
Secondly what would be good for the dc?
And thirdly what is realistic for the next year?
You can't leave your house all the time, where are you expect to go?
If your ok with it How long for? Make a plan 6 months a year? And make sure you both can stick to it after that you can work out if it's working or not. Too many people forget that change happens, emotionally, financially and physically and base a plan on to much, when the dc go to school, new relationships, jobs.
Also, it could be good if you are going to your mums or something, have some down time, deal with the break up without the dc, plus your know the dc are happy and safe.
I actually did this at the very beginning with my ex as one dc was only 8 months, I left him to take care and went out. At first it was good, I was sick of being in the house and it gave me a reason to leave but after time he decided he didn't like the arrangement, and he attitude became very negative giving me a reason to agree to change the plan. He went from clean up after him self and playing and cooking for the dc, to doing sweet af.
It all depends on what's realistic for your dc and you both.
Don't try and over explain to the dc, pick a short response and they will ask you again and again over time. They don't take in information like we do.