Kawasaki Super Sherpa fits your wants perfectly. Small, lightweight, capable of all the points you asked about, and easy to maintain. I would suggest picking up a used one and learing on it until you feel comfortable with a bigger bike.
08 KTM 950 SE, 09 KTM 950 SE, 04 KTM 950 ADV, 10 Husaberg FE390, 66 Kawasaki B8S Super 150
Hi/low beam conversions for: Trail Tech
, Baja Designs