Welcome to the "font of all Fazer knowledge". Yes the expression "good condition" can be very misleading. Hope you didnt pay too much for what is after all an 18 year old bike?
As for tyres my choice is MichelinPR3s-the later PR4 version isnt made in a size to fit the front wheel & although some owners "mix & match" tyre types I always use the same type/make F & R. There are good tyre deals out there to be had but if buying online dont forget to factor in cost of fitting,balancing etc.Get rid of those old tyres fast!
The mileage on your bike shouldnt be a problem engine wise provided it has had oil & filter changes.Use any good 10W-40 semi-synthetic brand.
As regards fork seals, brake discs,brake pads & carb rubbers etc have a look at reputable suppliers websites like M&P Swansea, Wemoto,etc. ebay is a useful starting point.
I would seriously consider replacing all the brake rubber hoses & master cylinder internals also the brake piston seals-no good going if you cant stop!!
Others will no doubt provide help & information-this is the best bike forum Ive been on.
A Fazer in good condition is a thing of joy so just be prepared for a bit of credit card bashing! Good luck & put a pic up on here when you can.