Double Bazooka coax feed routing

[W5RYM]

Hello everyone. I have relocated a Double Bazooka dipole closer to the house. It is on the opposite of the driveway from the house and is about 40' high. I need to route the feedline coax down the mast , have it turn toward the house across the driveway, and it would be about 15' above the driveway due to UPS, FedEx, Postal, trucks, etc. I would use a polyrope messenger line for stress relief on the coax.

My question is, can I safely run the coax across the driveway to the house, perpendicular to the mast, 15' to 20' lower than the dipole's feedpoint, without interfering with the efficiency of the bazooka? The length of the coax from the mast, across the drive, to the house would be about 70' using RG213. I'm new at this, so hence the question.