Welcome first and foremost.. & a very nice straight looking car congratulations on your purchase..
Some of the basics many have covered already, so I will try and baseline some of the other item, while having the clutch done, I'd recommend changing the diff/gearbox oil, get the break hoses visually inspected especially the ones at the back, suspension wise there is a lot out on the market to suit all budgets, I've tried a few and settled for the Weitec GT Kit (Good value for money), uprate the top front mounts at the same, exhaust again tried many and a genuine standard item seems to be just as good as any in terms of flow, the remainder is down to the look/noise you require which will lead you to after market brands, brakes if/when they need doing then pagid fast road pads with either brembo/zimmerman rotors all work well together.
If your brake lines ever do need replacing then like already mentioned on the thread go for a set of goodridge stainless lines, it will improve the pedal feel no end, also some decent brakefluid to suit. Beyond that a good service Bosch WX78 plugs work well, if/when replacing any belts then either Bosch or VAG, if the cambelt needs doing then VAG do a kit, I have that part number if you ever require it, when doing the cambelt it's always worth doing the camshaft/auxilary shaft seals too, next will be all of the suspension bushes in time, if sticking to OEM then for the front wishbones I usually just get OEM items with the bushes already pressed in saves time, drop link bushes are usually the next suspect, followed by lower ball joints at which point alignment work a must after installation, MK2's have a little bit adjustment on the front for camber, thereafter the next item on the list could be your gear linkage, maybe a little play, sloppy or difficult to engage some gears, get a refurb kit and replace the lot including the rod linkage in the bay leading upto the gear box itself, we replaced mine with some metal ball joint item when we first acquired the car back in late 04 and still going strong today.
Tyres P6000's won't really go much wrong there, many use Toyo T1R's, I prefer Perreli P7's nice progressive grip and not a bad looking groove either, from here on in you then have a solid base that your comfortable with to then progress further should you wish to from a power prospective.
Anyway a little insight there to my journey to date, happy motoring you won't regret your purchase, there is something about a MK2 that will always put a smile on your face.
PS. Speaker F = 5 1/4 & R = 6x4's in standard OEM locations.
