Im looking at possibly building a agv (autonomous ground vehical) for testing settups involving telepresence and payload carrying, as well as... airsoft

the plan is for a 1.2ghz or 2.4ghz video camera reporting to a 2.5inch lcd screen on my person. what is the best drivetrain option? Is this too big a project to do with servos for continuous rotation? what servos should I use? what wheels? or is there a cheap, mid-scale track solution that can scale outdoor terrain (picture paths in the woods, ocasional branches, rocks, leaves, hills, groundhog holes, ect.) advice for building material? I was thinking expanded pvc or HDPE, maby delrin. also, will a IR lamp provide illumination for a 2.4ghz camera at night?