Right, at a P&P a while back, was watching a bunch of slitties trying to tackle a tough hill, and failing, so they challenged the 'Landy-Lads' to show them how it was done;
Three took up the gauntlet; two challenge prepped disco's and me in a bog stock Rangie.
One of the disco's gave up; other went over the other side of the field to get a run, and blasted a new path up it.
I tried the tricky section, and after a few refusals and a bit of work, found a path up..... just.
Then this ruddy Series One came along, bounced straight up and asked, "What you all doing up here?"
Right here, right now, the STANDARD Series III is almost certainly more capable thatn you are; you shouldn't need to do a THING to it except general servicing; make sure you have 'useful' tyres, and AT's for a novice are a better training tool than agressive muds, as they wont drag you as far into trouble, and will give you more oportunity to learn how the car behaves at the limit of the tyres traction, and pack some recovery kit to get yourself unstuck when you get it wrong.
DO NOT, start messing with the motor and trying all teh mods every-one suggests you 'Need'..... you dont, and the trouble is, it increases the number of variables.
when the car starts tiping and sliding and doing 'unusual' stuff on you, as you learn, thats either what it SHOULD do, or you're doing something daft.....
If you have a modded landie doing stupid stuff, could be thats what its supposed to do, could be you doing something daft, or it could be that its something to do with a mod, making it do something thats less than helpful.....
Which, as a newbie, you probably wont be able to work out.
FAR to many Landies (& other cars too TBH) get modded badly, in consequence to a previouse mod, and a driver not REALLY knowing thet what they did first time round was less than helpful...
WHEN you have some experience, and are certain you are getting stuck PURELY becouse you have got as good as the car...... THEN start changing stuff, and a set of more ruigged tyres is the first mod to make..... nothing more..... just tyres!
Having learned on small slippery hoops how to drive for traction and to avoid axle stopping obsticles, see how much easier it gets and how much further you can go on larger grippier rubber...... and get a feel for how the car behaves on it....
THEN if you are deturmined to go further, think about other upgrades.
Paras would be my preffered way of getting more suspension travel and better ride, and a small lift, but to be honest, as the trials buggies show, big lifts aren't as helpful as you may imagine, advantage of added clerance off-set by disadvantage of higher Centre of Gravity...... and by the time you have got to a standard of competence you could apreciate the difference, might be other mods that are more important to you, like finding more power, or lower gearing, or getting the CofG down.....
And while modding series is fun, its also expensive, so having used it as a learning tool, think long and hard before chucking dosh at it, 'cos you may get a lot more for your money trading up to a standard 90 and working from there, with mods.....