If I were you, I would get another revolving line going. Maybe an easy store card or gas card that you might use. Or maybe apply to cap one student card. I read your old thread and saw you apped to cap one already. Make sure you are doing the student link and make sure you put the right income, hint hint. But cap one previous rejection might prevent you. You made some mistakes earlier but nothing fatal. Someone suggested local cu as well. Look around. If they have student cards, might be worth popping in and talking to loan officer before apping. Otherwise, you need to chill out for 6 months for that discover to age and old inquiries to age. Then see where score is. If you want to track your score, go sign up to credit karma and credit sesame. Yes they give you fakos but they are free and gives you idea where your scores are going being youre a poor student. Btw you can manually put daily score from creditkarma. Ignore both website advice as to what card you qualify for. Wait the six months or whenever the fakos show decent score increase and buy real score. Then come back here for advice on what cards are next. Remember even if your scores are high, you will get rejected more often than someone with similar scores and deeper credit file.
LIMITS IN CARD DESCRIPTIONS