Looking for 3-4 Card Setup

I'm looking to move out of the BofA system and was wondering of an ideal card setup that maximizes my primary purchases (Dining, Travel and Groceries).

I would like a 3-4 card setup and was considering going with Amex Gold (Dining and Grocery), Venture X (Catch All/Travel/Costco) and Costco Citi (Gas). Are there any cards/setups I should consider? I'm open to all suggestions. Thank you!

• Current credit cards you are the primary account holder of:
  • BofA Premium Rewards – Platinum
  • BofA Customized Cash – Dining
  • Costco Citi Card
• FICO scores with source: 760
• Oldest credit card account age: 9 years
• Cards approved in the past 6 months: 1
• Cards approved in the past 12 months: 1
• Cards approved in the past 24 months: 2
• Annual income $160k
• Ok with category-specific cards?: Yes
• Ok with rotating category cards?: No
• Estimate average monthly spend in the categories below.
  • Dining – $400
  • Groceries – $400 – Costco/Local Groceries
  • Gas – $200 at Costco
  • Travel – $250
• Do you plan on using this card abroad for a significant length of time?: Yes
• Cards being considered: Chase Sapphire Preferred, AMEX Gold, Venture X,
• Purpose of next card: Looking for card setup to maximize travel Ideally move out of BofA system and would like a 3-4 card setup