Opinion wanted...garage hoist hookup...

I just noticed that your beams are two by tens. I still think this is good, but I think I would still get a pros opinion as as mentioned. If a person really wanted to turn this into rocket science you could figure up the live loads, dead loads, deflection, grade of the lumber and the species,and even the angle of the grain comes into play. Also include how large the holes are, where they are in relation to the center of the beam (center being the best place for them, if you have to drill), how you joined the three pieces together, blah, blah, blah forever. Just make sure that the beam cannot tip over or roll. It would get really weak at that point.