Rina is perfect for a first hole.
When using lube you want to reduce friction only so apply a small amount to yourself and the hole otherwise you will essentially be fucking the lube instead of the textures. If I use too much lube I usually find that after about 5 minutes the onahole suddenly feels far better than at first as the lube dries/thins out.
If you are going to go hands free then find or make a mount that doesn't grip or constrain after the entrance of the hole for the same reasons outlined above. Once you get your balance right then you're in for a treat.
I would recommend the original Rina and a mouth of truth, the loli holes like lolinco or admission will just crush your dick even at 5 inches and you must be hard as a rock to use them, I don't like my admission or lolinco but they do give far more stimulation to the penis at the expense of losing out on what I feel is a more enjoyable longer session