On Purepool, Licht will need to answer. I run the pool.biblepay.org which is the other heat mining website.
There is no maximum limit to heat mining PCs, but remember we require a distinct CPID to solve each of the (5 block lookback solutions), so I feel you are dealing with diminishing returns if you point a lot of power at POBH (POW). Your better off pointing them at PODC if you can gather the stake amount.
Thank you bible_pay. I will try to buy BBP on the exchange for the stake but I need to convince my parents first.

They only accepted to give me the spare PCs for my personal use.

How can I contact Licht?
And another stupid question. How can I vote? I don't understand very well the proposal posted above but I would like to know for the future.