Luxury Two Sided Postcard Design

Project Title: Luxury 2-Sided Postcard Design for High-End Marble Surface Company
Project Description:
I need a sophisticated, luxury postcard design for Elite Marble (elitemarbleus.com), a premium marble surface company serving Florida's high-end residential market.
Deliverables Required:

Professional 6"x9" double-sided postcard design
Print-ready files (300 DPI, CMYK, with bleed marks)
Source files (PSD/AI/InDesign)
PDF proof for review

Design Requirements:
Brand Assets Provided:

Elite Marble logo (must be prominently featured)
High-resolution photos of luxury pool decks, driveways, and estate installations
Spanish marble material samples/textures
Brand colors: Gold accent (#B8976F), deep charcoal, cream/white

Important Note:
Use technical information and benefits from vubastone.com as reference material, but DO NOT display VubaStone branding anywhere. We are an authorized installer/reseller presenting this as Elite Marble's offering.
Content Focus:

100% permeable surface - superior drainage (21 gallons per sq ft per hour)
Hurricane/storm resilience (280% stronger when wet, zero storm damage)
Temperature benefits (30% cooler than concrete)
Extract technical benefits from vubastone.com but present as Elite Marble advantages
Exclude basic contractor-level selling points (no "1-day install" type messaging)

Design Direction:

Ultra-luxury aesthetic matching high-end Florida estates (think Naples, Palm Beach)
Sophisticated typography (suggest Cormorant Garamond or similar serif paired with clean sans-serif)
Educational yet aspirational - inform about technical superiority while maintaining exclusivity
Visual style should compete with luxury car or jewelry marketing, not typical contractor materials
Subtle, elegant use of technical specifications
Focus on lifestyle and property value, not installation speed

Front Side Should Include:

Hero imagery showcasing the product in luxury estate settings
Compelling headline about lasting value/investment
Elite Marble logo and contact - see website for contact details EliteMarbleUS.com)

Back Side Should Include:

Technical advantages presented elegantly
Comparison to traditional surfaces (without looking like a basic chart)
Gallery of applications
Call-to-action for consultation

Reference Style:
Review elitemarbleus.com and elevate beyond current materials. Think Four Seasons marketing meets technical excellence.

Would be interested in brochure + postcard if possible.