If you want reliable 4WD motoring, my suggestions would be...
1) Remove props now. 6 bolts at the front, 4 at the back and 4 supporting the VCU, just be careful because its not light. This will stop wind up due to differing tyres. It may tell you if the noises you hear are the VCU support bearings - if the noise persists, then its not - if the noise stops, it might be or it might just be reduced stress on the diff!
2) The VCU is in surprisingly good condition, however, its on the upper limit of acceptable, so knowing what the outcome of it getting any stiffer are, I'd get a VCU and bearings ordered. Going by feedback on here, Bell Engineering are a good supplier.
3) In readiness for the new VCU and putting it all back together, organise yourself a matching set of tyres. If your Maxis have good tread dept and you are happy with them, get another couple (or 3) - but make sure they are an EXACT match to the ones you have. If your Maxis are low, then a set of tyres that suits your needs.
Once you have the tyres sorted and new VCU with props back on, you'll be able to tell if the noise was the support bearings.
Not sure what others think, but while you're under the car, might be worth changing the oil in the IRD and possibly rear diff. If you do change the IRD oil, make sure you loosen the fill plug before the drain plug.
I joke on other threads about leaving strange noises cos they'll sort themselves - but tyres and the VCU are things that can definitely not be ignored on Freelander. You have to take care with them, but you'll be rewarded with a great car. The bolts on the props are Torq heads, I've done mine with regular sockets, but it is easier and less likelyhood of damaging them if you use Torq sockets. I've got a set now.