Question for those surfing freezing water.

The coldest water I surfed at is 6 Celsius / 43 F.
I wear 4/3 wetsuit, chest zip.
2mm hoody
5mm boots
2mm gloves
with 2 heat pads that only last less than 30 mins.
I can only last for around 45 mins in the water. That is when the sun is out and there is no wind. Honestly I'm a bit of a wimp and will need a thicker wetsuit. I was thinking maybe I should invest in a drysuit instead? I've looked at some wetsuit buying guide. Generally anything under 6C should wear a 6/5/4 wetsuit. I was thinking maybe a good 5/4/3 wetsuit would do the trick?
I need help with choosing the right wetsuit. There are just so many different technology and the different ways. I got a few on sale that I'm interested in. From what I know, the chest zip is usually better than the back zip. I'm also more interested in buying a coloured wetsuit rather than fully black as it is easier to spot me in the crowd if I ever get in trouble.
I wear 4/3 wetsuit, chest zip.
2mm hoody
5mm boots
2mm gloves
with 2 heat pads that only last less than 30 mins.
I can only last for around 45 mins in the water. That is when the sun is out and there is no wind. Honestly I'm a bit of a wimp and will need a thicker wetsuit. I was thinking maybe I should invest in a drysuit instead? I've looked at some wetsuit buying guide. Generally anything under 6C should wear a 6/5/4 wetsuit. I was thinking maybe a good 5/4/3 wetsuit would do the trick?
I need help with choosing the right wetsuit. There are just so many different technology and the different ways. I got a few on sale that I'm interested in. From what I know, the chest zip is usually better than the back zip. I'm also more interested in buying a coloured wetsuit rather than fully black as it is easier to spot me in the crowd if I ever get in trouble.