Baofengs are notorious for using non-standard antenna connectors. If you're willing to spend a bit more (if you want to depend on it with your life, you probably should), you'll find higher quality, higher power, and standard connectors, which will give you much better versatility.

I would recommend something like the ICOM V80. It uses a standard BNC connector, which you'll find on hundreds of antennas. You can also get car kits to mount the same antennas on the outside of a vehicle.

Rather than worrying about fixed antennas, start of with something like a N9TAX roll-up Slim Jim. It will give you good performance, and all you need is a length of cord over a convenient branch to raise it.