On the other hand, a 40 M dipole will provide you with a number of contacts late into most evenings. It can also be used on 15 M for those occasions when you can operate during the day. Multiband antennas are often attractive to new comers. They are by necessity compromises, and usually don't work as well as single band antennas. I suggest erecting a single band dipole and using it for a while.
Homemade antennas are better than commercial ones.
I hope that someone finds this useful. See you on the air.