So much information available here, brilliant.
For what it's worth, in pictures 4 and 6 the bass drum looks more like an 18" to me. Unhelpful I know. That, or it being a 20", could have the effect of making the tom toms look bigger so they might be a 10" or a 12" mounted tom and a 14" floor.
But who know!!
I'm not a betting man, but I'd still wager that BD is a 20". I'm also certain the FT is a 16". The only one I'd even wonder about is the rack tom, but if pressed, I'd still bet on it being a 12", too. The proportions look exactly like my old kit.