Regarding quick releases, Google pinhead locks, there are skewers that take special key you carry on your keychain so nobody can remove the wheels without it. They have them for quick release seat posts as well though many people take an old bike chain and run it through their seat rails, down and around the seat stay . Usually people put it in an old tire tube to avoid scratching up the paint. These things will allow you to simply lock your frame up without having to lug a super long chain, remover wh3els or weave a chain through the whole bike.