Due to recent rule changes and clarifications, some aircraft kits can be constructed using quick-build kits while still complying with the 51-percent rule. Make sure the quick-build kits you select comply with FAA regulations for experimental aircraft.
Quick-build kits or subassemblies can dramatically cut the amount of time you spend in your garage working on your plane. In fact, many can reduce assembly time by half or more. Yes, you can buy a standard kit for the fuselage and tail, and then purchase a quick-build kit for the difficult wings. Just make sure the manufacturer and model you select offer this option.
How much time is needed to construct from a quick-build kit? From 200 to 800 hours is typical. However, it's up to you, the builder, to ensure that the plane selected complies with the 51-percent rule.