I put DD in adult single at about 20 months (for same reasons as you) - put some pillows on the floor, she only ever fell out once - and didn't wake up. I don't see the point in bed guards, you've got to learn not to fall out of bed at some stage . . .
No, sounds good to me. My dd has a low bed rather than a toddler bed. It's a small one but should last her a few years. We put her old cot mattress on the floor by the bed for a while and she did fall out a few times but it never really bothered her. How exciting for you.. Hope you get some sleep! Remember he might just turn up in your room at random times. I find it easier when i'm half asleep to just make space in my bed and let her in rather than take her to bed but we usually regret it in the morning as its a bit of a squeeze! Fortunately it's not all that often. See how you go!
Bless him. He's asleep in his big boy bedroom for the first time (I do realise that sounds naff). Anyway...we decided to go for a proper adult low-to-the-floor single as he's a difficult sleeper and we get in with him to get him off to sleep. He also comes into our bed at midnightish and we thought we could perhaps get him out of the habit by one of us settling him off again in his bed.
Anyway - is there some reason I should know about why we should have gone for a toddler bed? We have also put cushions on the floor in case he rolls off. We do plan on getting a bed guard but won't have it for a few days. Am I missing anything?