I've been doing a lot of research on credit cards, thinking about my credit card setup, and I'd appreciate some advice on strategy.

Basic information

• Current cards: CSR (8/24), CFF (5/2019 – downgraded from CSP), CFU (9/22), Bilt (4/23), Costco Citi (8/22) – all $10,000+ limits
  
• FICO Score: 820
  
• Oldest account age: 20 years
  
• Chase 5/24 status: 2/24 (1/24 soon)
  
• Income: $200,000+
  
• Average monthly spend and categories: not sure exactly, but around $8,000/month
  
• Open to Business Cards: no
  
• What's the purpose of your next card? I’m not exactly sure what I want to or should target—maybe hotel status, great deals/SUBs, and points from different ecosystems for economy flights in case I need them. I’d probably be interested in getting just a handful of credit cards now or slow churn. I want to maintain an 800+ credit score because I’m in the market for refinancing a mortgage. I’m not exactly sure what I want to or should target—maybe hotel status, great deals/SUBs, and points from different ecosystems for economy flights in case I need them. I travel 10-15 times a year—usually 1-2 international trips to Asia (China/Japan/Korea), Europe (Paris/Spain/Switzerland), and some domestic travel (like New York, Vegas, various destinations with ski resorts, weddings, etc.)
  
• Do you have any cards you've been looking at? Yes—I’ve listed the cards down below in “Current strategy—what I’m thinking about doing”
  
• Are you OK with category spending or do you want a general spending card? I’m flexible
  

Current strategy

• 3/24
  
  • Get/keep VX
    
• 4/24 and 5/24 options
  
  • Get/keep Boundless (UG RC)
    
  • Get/downgrade Strata Premier
    
  • Get/downgrade Barclays HA + AA
    
  • Get/keep Hyatt
    
  • Get/keep IHG
    
  • Get/downgrade United
    
• After 5/24 options
  
  • Get/cancel Gold + Platinum
    
  • Get/keep Aspire + Surpass (UG Aspire)
    

Specific questions

1. If I got my Venture Rewards card on 2/1, when is the absolute soonest that I can get a VX? I’m seeing mixed answers online
   
2. What should my 4/24 and 5/24 cards be?
   
3. Can I double dip and apply to 2 Chase credit cards on the same day to have them count as 1 HP? I’m seeing mixed answers online
   
4. For the Strata Premier, I’m not sure what I’d do with my TY miles after I downgrade to a $0 AF card after a year. Any suggestions?
   
5. Can I double/triple dip and apply for the Aspire + Surpass (+ Gold) on the same day to have it count as 1 HP (assuming I can meet MSRs)? I’m seeing mixed answers online
   
6. Can I apply for Gold + Platinum on the same day still get both SUBs if I meet the Gold MSR first? Again, seeing mixed answers online
   
7. Also not sure what I’d do with my Amex points after I cancel the Gold/Platinum (can’t see myself holding either or the Green). Any suggestions?
   
8. Around how many new credit cards should I be looking to open per year if I want to keep an 800+ credit score in case I need to refinance?