I like the gravity bleed myself for the initial bleed but I don’t think it needs a full half hour. A few minutes will completely flush out the system unless yo are just barely cracking the bleed valve, and barely cracking the bleed valve will keep air trapped in high spots, you need good flow for it to work.
You can get clear vinyl hose from the fish tank area at your local WalMart. You can use any plastic bottle you have laying around. Put some type of hanger in the bottle so that you can hang the bottle above the bleed valve, then cut the hose to length, just long enough to go from the bleeder to the bottle bottom. Air only will travel upwards so you want everything higher.
Most brakes are cross connected, that is RR to LF and LR to RF. You can do both brakes on the same circuit at the same time, or do both rears first, then both fronts. You can do all 4 at the same time but you better have someone standing over the master cylinder keeping it full as it will drain fast.
Check to make sure before you start that the ABS plug is disconnected and look for a bleed valve in the line near the rear axle if RWD or 4WD. Sometimes where the brake line goes over the axle, there is a bleed valve because air can get trapped in this location and its near impossible to get it out.
Do the pressure bleed with an assistant as described above, the valve must be closed when the brake pedal is raised and it must be raised slowly. Hard and fast down, easy and slow up.