Potty Training... here goes

Tristan's new potty seat for the bathroom!!

So... today we are doing a diaper free session (from 3:30pm til bed time). It's been a mixture of nakedness and underwear and so far we've had 2 accidents. We have his small potty in the living room and his toilet seat for the adult potty. Tristan and I are typically home almost all day, every day (except days I babysit and even then we're in a house with 3 different potty seats the whole time) so I'm hoping this works. I've had people tell me "it's too soon" before but I learned that in most countries, children are potty trained a lot sooner than children in the US. We bought Tristan's first potty seat a couple months after he turned 1 and sat him on it before/ after meals, before/ after bed/ nap, and so on. He was doing pretty good with it too and then a few months later, we moved. So that plus many other new changes and he stopped so we stopped. Lately though when he's getting a bath/ shower he makes movements to show he has to go so I figured once the New Year started, we'd start again. So here's day 1 of our potty training: 

he'd rather stand on his potty

excited

Does anyone who has potty trained boys before have any tips I could use? Rewards are a no-go since he don't do candy and he doesn't care about stickers. Also since it's usually just me and him, he hasn't gotten the idea of peeing standing up in the potty (and can't do cheerios since he will just try and take them out of the potty). We also used pull-ups last time we did this so I'm not sure if we should just go with underwear and naked time or try pull-ups again? Any help would be greatly appreciated.