I would get coilovers, antilift kit and rear antiroll bar first leaving you with about £1700. Thats almost enough for a forged engine from T-M developments but it would work out cheaper doing it yourself but you wont get any real benefits from the forged engine. So instead I would buy one of Dane's (Starlet Parts Shop) TD04 kit (£1300) looks absolutely immense!!! Leaving you enough for a dastek unichip (second hand) and mapping at a push