Hi, Sorry for the massive delay would this bike be suitable https://www.decathlon.co.uk/rockrider-520-mountain-bike-275-blue-id_8351007.html? and would there be any customisations which could be bought with the package to make it any better for the heavier user? plus do decathalon sell the tire inserts. I remember travelling on a road once and some black thorn had fallen which punctured my tire. Costing me a long walk back with a hefty bike.