No worries dude I'm glad you asked.
Yep rear axle is more simple, remove halfshaft seal in the stub axle and fit seal RTC3511 to the inside of the hub, depth to 4mm.
That setup lets axle oil to the bearings and you're winning, the RTC3511 hub seal is a double garter spring seal sinus very good at retaining the oil.
The front, if you imagine, from the stub axle outwards is identical to the rear axle, simply stub axle bolted on, hub fitted to stub, caliper on and drive flange.
Therefore on the same token all you are doing is removing the stub axle seal and fitting RTC3511 to the hub, nice and easy.
Where you are becoming confused is the extra things like the cv thrown in there aswell.
Essentially the swivel and cv are part of a different system to the hubs so we don't actually need to worry about them, but of course the swivel does come into play because as you say, it requires oil in it just like the rear axle does instead of swivel grease that land rover now specify
Unfortunately later swivel knuckles don't have drain and level plugs as James says, land rover were happy with their bodge grease so stopped tapping the knuckles out
You COULD find a pair of early 24 spline knuckles, that's the ideal solution. Otherwise I think they take around 700ml of oil.
The trouble with not having drains is that, well, you can't drain the oil.
This is something you'll want to do quite regularly, why not, it keeps your cvs and bearings happy.
You could drain through the bottom swivel pin bolts, just pop one out, and maybe use a middle swivel seal retainer bolt for a level? Check to see if they are drilled through into the housing.
Otherwise simply drill and tap and 1/8bsp hole somewhere level with the lock stop bolt and use that for your level check
Anyway I digress.
Some people remove the half shaft seal in the swivel ball itself to allow axle oil to mix with swivel oil and thus allow lots if oil to gush in to flush out the wheel bearings regularly BUT that's not for me, off road on and angle it would allow your swivel to drain which could then dry out your cv, not good. Leave the seal in the swivel ball.
With all these mods there are things to watch out for.
Ie, when changing oils or particularly first fill, your hubs will be dry, so when filled, go for a drive to slosh oil into the hubs, but then go back and refill levels.
Your hubs will sit in oil up to the depth of the stub axle hole, so this could empty your swivels a little bit.
Regards drive members, don't run your cvs too tightly shimmed, it won't allow much oil to get into the hubs, let them have a bit of play.
Your cv splines will never be happier running in oil, no more dry fretted splines of rusty red paste on your bearings, you'll love it.
The dust caps will be sufficient, they may weep a bit, fit decent quality new ones if in doubt.
Better still fit HD drive flanges, they have a screw on cap with and O ring.
Hope that helps, don't hesitate to ask for more info