Looking for a little help with my first vintage. A little background, I normally ride a mountain bike (spechy rockhopper) so a road bike is all new to me. I wanted a bike for my Sunday rides which intail twice around a local park then a trip downtown into the city, have a light lunch a ride back to my truck 20-25 miles total. When in the city my bike is left locked to a light pole. I want something enjoyable to ride and doesn't scream "steal me".
I picked this up for free. Seems to be in decent shape but does have issues shifting. It doesn't always want to change gears and sometimes skips a few. I want to change over to a flat bar instead of the drop bars. (Which I already have) . Can anybody recommend some budget upgrades. I'm not really sure what I would need to replace to switch over to the flat bar as far as the shifters and anything else on the drivetrain. Hoping to have an enjoyable to ride bike without spending more than needed. Like I said this will only be a Sunday bike, not for speed, but just to get out and ride and not have to worry to much when I leave it downtown that someone will steal it....thanks for any help