I was in a similar situation recently with 3 different key points: I was at 5/24 already, I needed a card for grocery and dinning mostly, travel was a bonus and I already developed a relationship with Chase.
Now in your shoes, the CSP is more of a travel card than the Gold. And considering the number of accounts opened the last 24 mo, if you plan on applying for additional Chase cards and have a more complete setup I would hands down apply for the CSP. Key difference for travel are insurances that I would double check before applying.
For example in my case, I want a more complete Chase setup but still pushed back on it and applied for the Gold (better fit for my current needs).
Both cards are fantastic products in my opinion but they're quite different in many aspects. Make sure the one you apply for will fit your current needs at 100%.
