Only if it is your own property then yeah, you should b able to go crazy. Sounds awesome!
Before you slash:
Go to CORBA website and watch a bunch of videos they have on there about building trails the right way. Accounting for drainage, erosion, obstacles, natural features etc.
Then get some buddies or a local club and let them help in exchange for riding. Better look at legality of having strangers riding on your property and the risks involved once word gets out there is a trail "just over that fence".