I have an MU P8 and it is probably the only bike I own I have not modified. It has excellent parts, even the tires that came on mine are still on it, Marathon Supremes.

I did put SPD pedals on it because I wanted clipless and I changed the seat because I wanted a different one, not because the stock one was heavy.

The seat post has a built in pump inside it, which prolly does add some weight, but is very convenient to have.

I would definitely recommend the bike, but would urge you to ride it some before making any mods.