My info:
5'6"
115lbs
35 years old
Surfing 2x per week every weekend
Great fitness level, not tirathlon but better than average as I used to bike and surf a lot, but stopped biking for the past year after moving to my new location.
My Current boards:
Lost Mayhem Sub-driver, 5'7" x 18.75" x 2.25" - 25L
Hybrid Egg: 6'0" x 21" x 2.75" - 38L
I am looking for a Fish board I can use from 1-5ft waves as I am having a bit of difficulty with paddling speed with my current 25L shortboard. I rode a buddy's 5'11" Firewire shortboard which is 30L and I paddled much better with it, 30L seems to be my sweet spot. The problem is I couldn't duck dive his 30L as well as my 25L obviously since his board was much longer than mine.
So, my question is, Would I be able to duck dive a shorter Fish board at 30L, particularly any of the board specs listed below? What size Fish do you recommend for my someone my size? I am very interested in the Lost Puddle Fish Carbon Wrap board in the sizes below, I think the 5'5" board is the right size for me but from what I've researched, most people say go shorter to 5'4" or 5'3", but I am worried the volume might be too little at those sizes and I won't get any paddle power from anything less than 30L. Feel free to give any suggestions/tips/advice on any specs you'd recommend for me.

Lost Puddle Fish Carbon Wrap
5’3” x 20.00” x 2.32” / 27.50L
5’4” x 20.25” x 2.32” / 28.50L
5’5” x 20.50” x 2.38” / 30.00L