Or not, especially because I would love for you to find that many pallets, in perfect condition for free…and maybe you didn’t see the concrete foundation in the pick, also not free and of course the screws that hold it together.
Your “ideas” that you post are 99% of the time a waste and useless.
Now back to the actual thread. What is your budget? Most home improvement stores sell kits that are relatively cheap, or you can just design your own and build it from scratch, I built mine last year, it all comes down to your time and budget.