Had the lift for the rest of the weekend, so hoisted up the other big beam – a 270×45, 7.5m long one that spans across the kitchen, and its companion that has the cross-bracing to hold it upright.
This was the only time I’d done any lifting alone – had to slow down a LOT and do the lifts more carefully, without having someone on the lift and someone to steer the beam, but got it done with no mishaps.