I'm torn on what Defender to get. I do plan on doing quite a bit of off-roading. I want to get the V8 Defender but it's about 2k lbs heavier than the P300 engine and loses that payload, payload is only a little more that 1k lbs. Additionally, the smallest wheels are 20" and there doesn't appear to be anything you can do to fit smaller wheels. Additionally, can you not get a roof rack on a V8? However, my primary concern is the weight of the vehicle since I've always been told the lighter the better. On things such as mud and gravel hills lighter vehicle many times don't need to engage their lockers, or even 4WD, where a very similar but significantly heavier vehicle struggled to get through even with 4WD and lockers. I could get the P400 engine, that gives decent acceleration and decent payload, but can only get 19" wheels. There are some aftermarket kits to fit 18" wheels but it appears to only be for one specific type of tires. Additionally, it's still a good 1k lbs over the base model and also loses that in payload, so it's still significantly heavier than other models. If I get the P300 model it's a pretty light vehicle, an advantage off-road I'd imagine, and you can get 18" wheels from the factory, but I'm wondering if for sand dunes, very muddy terrain, or loose rock inclines the P300 has enough power, or does it struggle with that small engine?