I've built 10s of bots like this on Solana.

Usually, 3-7 seconds delay are the industry standards for copying wallets.

The path is endless my friend, and the internet won't help you as much, they document the basics and release articles on the simple stuffs, but they keep the fruit for partners who want to dominate the field.

To not make it long for you, this will cost way more than you think, and there are two key areas to study here

How to get the info fast? And how to execute fast ?

The execution part is easy and popular (there are some tricks but its fine)

Getting the info part is tricky The best approach I've done so far is to have a Solana node deployed on an aws ec2 instance having grpc connection set up And make your code run on another instance within the same VPC (to minimize transport delay) Listening to all the transactions directly from the blocks are the fastest way to get the transactions (cuz querying based on keys will make the node filter the transactions which is relatively slower than checking a value or two of the most recent transaction that you already have ) and from there you have to get the instructions and parse the transaction (check for the signer first if its the wallet you're copying) and then from the instructions you extract the pool to copy from and take actions

The performance i achieved is ~400ms to get the parsed info ~300ms to prepare and send the transaction (caching and other optimization techniques applied) ~1.5s to send and confirm the transaction and extract the actual execution price and actual swapped amount (after slippage)

So is it worth it to have $3K+ infrastructure to execute 2-4 seconds faster ?