Refuse Extension

I find this forum very helpful and informative. I will leave the country soon and trying to gather all the necessary documents and submit it to British Embassy. I overstayed for 12 years , married and have a child (10 y.o). My application for extension was refused (appeal allowed). I can't afford to pay for a additional fee to a solicitor so I will do it myself. I have a few questions.
1. In my refusal letter it mentioned that I was served IS151A, there was no document attached, only appeal form. And that if I don't appeal they will removed me. I was wondering since I was served with ISI51A will it affect my application and be ban for a year??? and not covered by concession??
2.I would like to retrieve all my documents submitted to the HO but afraid that they will send me a ISI51A , this means that I am concession does not apply on me.????
3. My husband will change employment, does this affect my application ?he is employed for 4years in his present job?? My husband's salary is low, he got his part time job (handy man) paid cash on hand, do we have to declare this on my application as well? They might think that how can we survived?? we don't received any kinds of benefit except for child benefit? and have a saving of less than 2 thousand, will this be enough?
4. I work 12 hours/week? Do I have to declare this on my application. My employer won't allow me , she's scared and don't want to be in trouble??


Thanks

Receiving an IS151A does not affect whether or not a person is eligible for the concession. If you can prove you were in the UK on 17 March, and departed voluntarily before 1 October, then the IS151A makes no difference. That holds true as long as there were no public funds dispensed in removing you.

For completeness sake, I'll add that the IS151B is a different story. Getting one of those subjects the person to the reentry ban full stop. No appeal pathway either.

So be careful you don't pick up an IS151B on your way out.