I haven't ridden a bike since I was a kid, but am interested in getting back into riding for another diversion besides hiking. I am looking for a bike that I can use for bike paths, dirt trail/road riding, and some lightweight (10-12lb base weight) touring. I was thinking maybe a cyclocross bike might do the trick, but am basically clueless. Any ideas on something that would work with a budget of around $1000 for the bike. Thanks.