I'd do the rest of the PPL on a taildragger, it may take a few extra hours but from experience the skills you'll learn will hold you in good stead for the future. Its easier to step from a tailwheel into a tricycle aircraft than the other way round. Plus, if you are hour building you may be able to hire a cheap older taildragger aircraft rather than a 120+ quid warrior, again speaking from experience.
Eaglescott in North Devon used to be able to offer full JAR PPL training on a taildragger, plus the advantage of using a 600m grass strip it makes it very rewarding to get the licence that way. And theres no controlled airspace so you spend more time in the air and circuit bashing is isnt interupted by others. Without turning this into an advert for Eaglescott, the instructor there has hundreds of hours on tailwheel aircraft.
Good luck.