Just googled it - that looks like quite a deal. Better looking frame hinge, tyres, seatpost and steering column than other cheapies for a start.

The saddle on almost any bike will need to be changed anyway IMHO. If my cheapie is anything to go by saddle height is a no-brainer; just extend the seatpost as far as it's allowed to go (I'm a short legged 5'5" and I needed to).

One little cosmetic tip for those with a plain seatpost is to mount the saddle clamp upside-down, inside the saddle, for a cleaner look.