oooh she looking good!
Loving the creamy beige colour and the 5 door pimp ness.
Can't believe that is your first car - pretty damn cool for a first car.
Ok if you are going for 4age good luck. Unless you are pretty minted and have a keen eye on parts 4age stuff is going to be hard to comeby. Not impossible but pretty rare and may command more money.
If you are going that route then you will need custom engine mounts and a t50 gearbox (yours a 1.3litre with k50 5 speed or 1litre with k40 4 speed?) anyway a 4age will shred the k50 gearbox plus won't mount up properly.
As you will be running on carbs (efi not an option?) you will need the carb manifold.
The above was one of my options for the kp starlet (until i sold it) my other was a 4k stock rod engine with lumpy cam and some twin carbs and that would be pretty lairy. In fact I know of one forsale if you have the 1 litre and needed a performance increase.
or go for a 5k 1/5 litre engine from the liteace as all you will need is the 4k sump and its a good direct fit.
go to www.kp61.net for the starlet owners forum and

hope my rambling is of some use!