If you’re worried about the Moonstone cost, that is valid. I will say you can sell Zerda pups for more than the base breeds. So could be worth it. In the end, if you like the result, it will have been worth it.
Worth is going to be pretty subjective - if you think it is and would like to do it, then yes. If you want to sell pups or something, you could make an interest thread and see how that goes before investing.
Imo, that's 300 ms unless you can get the items for pebbles on the FM. Unless you have ways of making MS without grinding or paying premium, that's 30 USD in one wolf so I'd be less personally keen to make those changes if I can find something similar or that I like more being bred or sold for less.
In the sense of raising the value of the wolf, that's hard to say. On a game with a similar mechanic (Flight Rising), where there is a fairly large overlap, these things don't really impact the overall value of the creature. Most people are more interested in the colors and if the creature is bred or unbred (with unbred being considered more valuable), with the breed or markings of the creature being something that is subject to change. If someone is going to change the breed or markings to match their own preferences, they won't want to pay extra for the breed/markings the creature already has. Lorwolf may evolve differently, but at this early stage in the game, it's hard to say for certain.
In the sense of if it's worth it in your case, that's a very subjective question that I don't think anyone can answer. If it would bring you joy, I don't see why it wouldn't be worth it. I have a few wolves I've given full striped markings, and then a couple made into Volmyr, and I have 0 regrets for spending the moonstones. It was entirely worth it to me to have the wolf look as I wanted them.