should i stop my esa and claim tax credits ?

[wobble1]

I see now, it's being in wrag that is the sticking point.
I agree with DW, you should get down to CAB or similar as they will be able to do a complete financial assessment for you.
Maybe you should just go ahead with your ESA and let them kick you off when you aren't able to turn up for work focused interviews, at least you'll get some money off them for as long as it's poss.

[Carneucopia]

Yes CAB should be able to do the calculations for you - but you also need to look at claiming Carers Allowance for one of the youngest children. That would exempt you from any work focused interviews. Coming off ESA alone might not as you have no children under 6.