Current Projects chat and miscellany

Hi folks. first post- also new to ss. I have 12 flight of stairs to climb so want to set up as light a bike as i can without breaking the bank. I've just acquired a 58" 2012 Kona Paddywagon, and want to maybe buy some wheels, seat post, fork and bars (bullhorn i think) to get the weight down as much as possible. Any suggestions for what to look for these items, and where to look for them? excuse my ignorance but as i say i'm new to this. I've just sold my car and want to get into this with some good advice from folks like you.

12 flights of stairs would make me move house!

I don't think you really need carbon, just keep an eye on what things weigh, personally id just build it simple as possible, low profile rims like open pro's, low profile hubs to, 130bcd cranks instead of 144, slammed stem and narrow is risers, cut off any spacers, left over seat post or axles poking out past the nuts(after everything is set up!) i would say brakeless but don't do a premium rush to your front brake to save some grams!