Meds do help to improve memory and doctors often add a small dose of an anti-psychotic to an anti-depressant to help with the mood swings. There are some stimulants too that help to boost memory. Why don't you speak to your psychiatrist frankly about your fears and concerns and your ambitions? If you think your current pdoc is not much helpful you can change him/her and find a new one.
I don't know how bad or good your memory and concentration are. You have to decide for yourself. Best of luck to you.