Need suggestion for rear carrier.

Hello Guys, My hunter 350 is approx. 4 months old. I had already installed a rear backrest during my initial purchase (basically for my wife) We are now deciding for a road trip (Bangalore to Coorg/ Bangalore to Chikmagalur), however i need to install a rear carrier from aftermarket to carry my luggage. Obviously that means i need to unistall my showroom provided backrest 🥺 and install one with the carrier. Suggestions required from my hunter 350 family here -

• Which carrier to opt for with backseat? A strong durable one
• What can be the load that i can put in the carrier at most ? Additionally what would be safe weight for a road trip (with both people combined on bike will be around 145kg + 10kg approx. full tank oil)
• Do i need to change the rear suspensions in case the load is at the higher end?