I agree with the last part mate, but would seriously caution on the 'Bigger tyres [and] wheels' - reason ? well, firstly the freelander is already over geared in first and reverse. Making the wheel diameter greater will effectively raise the (already not ideal) gear ratio and make the vehicle far more difficult to drive 'off road'
The Hippo would be a far better 'off road' vehicle with a low ratio box - or indeed, a lower ratio first and reverse.
Adding greater diameter tyres is completely the wrong way to go.
Lift kit, by all means. But definitely not larger tyers for off road use.. A set of really good tyres (of the normal size) will works best with a lift kit if needed - the towbar can also cause up to a 10 degree difference in clearance on the rear so beware of that or remove it - (or at least the hitch) when off road is the choice -- I have just fitted Avon Ranger A/T's 195 / 80 / 15 and they are absolutely superb as a 50 / 50 tyre.
Cheers
Joe