So I've been paddling for a few years now. Started out on a 9'2, no idea how much volume but it was enormous
Sized down to a 7'8x28x4.75 that I think was around 130L, felt way too big
Currently on a 7'10x32x4.5 that is 125L (smallest I could find around here when I needed a new board)

The 125L board still feels huge to me and very floaty. I fluctuate between about 65-70kgs depending on time of the season, when the muscle starts to fade away and I get skinny again

I just found a good deal on a 7'0x26x4 @ 83L (kids model lol), or a 7'2x28x4 @ 92L that look so tempting... according to the volume calc, at 70 kg this board would still put me above water.

So I'm trying to figure out pretty much just by math alone whether something this size would still float me enough that it's still fun and easy enough to paddle into waves. I don't want one of those super high-performance boards that will be underwater unless I'm moving, and the waves here are hard enough to get into that I still need a little volume to get moving. The waves I'm surfing are fast beach break -- i.e. steep drop into a quick turn and down the line before getting slammed on the sandbar. so the shorter board the better.

What does seabreeze think? Unfortunately the only boards carried in stores around here are the boring recreational kind so I can't demo anything.