So I am thinking of doing that for a project.

Can you answer these questions?

a) Will it be easy to breed?
b) Will it be bought by other players?
c) In your most honest opinion, do you like it?

All projects are hard to breed, but this one won't be particularly.
I have been inactive for a while, so this may not be accurate, but I've done a lot of projects over several years and only ever sold a few from all of my pairs, so you probably won't back the worth of the resources you spend on the project.
I do like it quite a bit and would buy it because I like supporting people who take the time to do projects

Thanks! I am working on A Sylvorpa and Ny'vene project right now but I will hopefully get to that one after 3 gens

A) It really depends. All projects take time. I suggest using Essences.
B) I would say maybe, as some dont like Kelps or those colours.
C) Yes, I like it. The colours are great and fit very nicely together.

a) yes, tho for 4 traits or more the amount of traits dosn't impact as mutch the creation time of said project so if it was a limiting factor for you dont let it stop you from adding mor traits. You can probably use pre-regen pets to help you speed the process as visible traits alwais pass down, do not give visible traits to generated pets from regular essence however as it will take more time to actualy start your project that way. The less pricy and most efficient way i have found so far to make a project is to start with three pets generated/ from that themme (if you do a themme project) / regenerated. Using 1 male for 2 female ensure that in 1 to 3 attempt you will get 2 male offsprings to breed with the females they are not related too will make it faster and increass the number of eggs you can have in 1 generation.

b) probably yes, tho it is important that you do a project you want to do before anything else since you are the one who will have to breed them to completion. Pet sale in sylestia is a slow process, it may take a while and usualy not alot of offspring are sold but it is definitively an interressting designe. ^-^

c) Like i have said, it is an interresting project, tho i feel like the seeweed (G1) and glowing water (M3) traits are not used to their full potential maby a C3 similar to EC or C2 could make it more interesting by adding a bit more contrast to the pink and purple.