I’m going to reiterate what others have said in that Chase does seem to generally like seeing at least a year’s worth of history for their cards. However, once you do hit a year, you will more than likely be approved for the Freedom.
As a college student with a part time job (read: low income), I opened my first account with Discover in October 2013 with a $500 SL that was raised to $1250. In December 2014, I opened my second card (a Costco Amex) with a $4000 SL. Later that same month (before the Amex started reporting), I opened my Chase Freedom with a $1200 SL. My point being that hitting a year of credit history will open a lot of doors for you- especially at your income level. (I’m not sure that your AAoA would necessarily have to be a year.) I would hold off on any credit applications up to that point however.
Chase does like to see a more established credit history for their Sapphire, Marriott, Southwest, and United cards. I might not be the best person to ask as to when you’d get approved for the CSP or CSR, as the CSP is my newest card in a decent-sized portfolio. You can see in my signature what my portfolio looked like at the time (I have no bad marks either), and I got approved for the lowest APR (which indicates that I was approved pretty easily). My friend also got approved for the lowest APR with a similar-length history to mine, but only two open cards (one of which being a Freedom) and two closed cards.
So, if I were you, I’d apply for the Freedom once you have a year of credit history. This will establish your relationship with Chase, and it’s also a very good cashback Card that becomes excellent when you pair it with a CSP/CSR. As for the CSP/CSR, I’d say you’d want at least two years of history. Also keep the 5/24 rule in mind, in case you do decide to open more cards in that time.
Amex Everyday (3/16 @ $10k, now $18.4k - grocery stores, Amex offers) | Citi Costco Anywhere (12/14 @ $4k w/ Amex, now $14.5k - gas) | Barclays JetBlue Plus (9/18 @ 12k - JetBlue, occasionally grocery stores) | Amazon Store Card (3/15 @ $1.7k, now $10k) | Chase Sapphire Reserve (9/17 @ $6.5, now $10k - travel, restaurants) | Target REDcard Mastercard (2/15 @ $500 store card, now $9k - Target only) | Amex Blue Cash Everyday (3/15 @ $5k, now $5.8k - department stores, Amex offers) | Apple Barclays (3/19 @ $4k - 0% financing) | Chase Freedom Unlimited (5/17 @ $2.4k, now $3.7k - general spending) | Chase Freedom (12/14 @ $1.2k, now $2k - bonus categories) | Discover It (10/13 @ $500, now $1.7k - bonus categories when different from CF)