This antenna does not need a 75 Ohm transformer as quads do at lower frequencies. Any length of a good quality RG58X will suffice as the primary feedline.
Connect to station with any length of good 50 ohm coax and PL-259 connectors and one barrel connector to couple the feed lines.
This antenna can be tuned with almost any light duty rotators-wind load is small, antenna is light.
The support mast should be wood and would be a good practice to have it at least 3 feet long to get the antenna above the rotator.
Never use metal for the boom, mast or spreaders.
The configuration shown is for vertical polarization if you want horizontal polarization feed driven loop at the bottom instead of the side.