Rakesh, firstly good luck with your project, i hope you achieve great success.
My personal two cents, focus on the essentials to make it a true offroader, jeep has lineage and is a cult offroad vehicle - dont get distracted by the all show-no go mods. Parts should be available with a little search , however first find a mechanic who shares this as a passion as well - this wont be too difficult at Kochi.
Create a plan of what you want to achieve a Stage1, Stage 2 and so on. From a mod cost perspective it could be an endless pit - so prioritise accordingly and based on the vehicle condition.
Make your dream happen!