Would avoid computers now, and just go with a GPS (all that you are asking for can be gained through downloading data to Strava / Garmin Training Center), a Garmin 200, which is a great entry level GPS is $129.99 on Amazon.com, you may be able to find a better price if you looked, an alternate brand is Bryton, who make good GPS. No need to worry about any sensors with GPS, as it's a self contained unit.