How many times can I beat the Elite 4?

What is the maximum amount of times I can beat the Elite 4? I heard that it's 255 then I heard that in Pokémon RBY you can beat the Elite 4 50 times and if you beat it 51 times the first Hall of Fame record automatically gets deleted and In Gen 2 GSC the most you can have is 30 Hall of Fame records. I want to know exactly how many times I can beat the Elite 4.

I want to defeat the Elite 4 and have all kinds of Pokémon and have a lot of really cool, powerful, and strong Pokémon with levels showing like 25, 50, 75, 100, etc and a bunch of cool shiny pokemon on my Hall of Fame records.

I also want to have every Pokémon level 100 one by one as well on my Hall of Fame records in order from Bulbasaur to Celebi on Pokémon GSC and again in order but shiny on the next 251 order. Then I want to have a mix of all kinds of Pokémon from cool to cute to tough and powerful. I think that would be really cool to have all of those Hall of Fame enteries and then some.

How long would it take me to achieve all of this on just one game out of 3 for Gold, Silver, and Crystal? I want to start with Pokémon Crystal first then Silver and then Gold.

I would really like to beat the Elite 4 and have 1000 Hall of Fame enteries on each game but I don't think that is possible since the games themselves can only hold so much data.

So the question is... How many times can I defeat the Elite 4 without rolling over and deleting any other Hall of Fame enteries? Or can you get as many enteries as you want?

After I finish getting all the Hall of Fame enteries and defeating every Pokémon trainer in the game and have all 251 Pokémon in my boxes I want to save it all on my Monster Brain Memory card so I won't lose all that hard effort I put in the time for.