I'm also wondering if I should apply for CSR too. I don't have much income so I probably will get denied. The only purpose I'd go for the CSR is just for the 100k UR pts. Other than that, it's just gonna sit in my card holder. my citi bank premier is my travel card since I fly most with one of their partners. Every card is different for everyone. CSP is the same, ur probably just doing it for the UR sign up bonus, I think that would probably be a better bet for u since you don't plan to transfer. Only reason I keep UR points is how easy it is to earn. I've earned close to 240k in an year... 70k on the other card(non UR)
Have you considered maybe an Ink+ though? way more easier to earn, 70k sign up bonus.
MS is a very touchy subject. If you go overboard, u can lose your relationship with the card issuer. There are a few ways to do so though. You pay rent? Radpad works well. RadPad + apple/android? pay codes as travel for some reason with the CSR. rad pad comes with a 3% fee, but 3x bonus basically overrides it. There's also the Money Order way, Kroger,
Walmart, post office, then depositing them back into your account. u lose out on some fee though. Also it is best advised to deposit into an account that you are willing to lose. Good luck!