OP - I have most of your list, but have given up on the pram. He gets out of it now anyway, even when I DO manage to fold him into it.
He is now 18mo, he had his first tantrum at just 9 months old - and it WAS a tantrum, I had fitted childproof locks on a cupboard that has stuff I don't want him to ruin, and he spent a full 30 minutes lying on the floor in front of the cupboard, red faced and screaming, kicking the cupboard, lashing out at anyone who went near him, all because he realised he couldn't open the cupboard! 
I have to say though, his tantrums are much rarer now, and he is only 18mo. The only time he tantrums now is when I strap him into anything (car seat/pram/highchair), so apart from car seat (thankfully only used twice a year as I don't drive), I don't bother restraining him like that - he walks, holding my hand, he sits on a 'proper' chair at the table, and has a bed.
The only other time he tantrums now is over his ELC rocket - the doors come off, and he tantrums when he can't put them back on, but that is easily headed off by fixing it for him!
So you may find that if he starts early, he finishes early. No promises on that though!