Theory
I think because many people are buying now BTC due to "free money" the schedule to be at November ( BTC GOLD ) I believe that its price should go down because many people also transfer there funds from altcoin to bitcoin
And it good time to buy altcoin ( maybe wait even a bit longer )
What do you think?
In some sense you are right. At the last fork that had happened, a lot of people got free money and somehow many thinks that they need to buy more btc for more free money. I'm sure that there will come a time where bitcoin will go down. That is the time when people got their free money already for sure bitcoin might experience a temporary drop. That being said, I think it is better to not buy some altcoins now but go with the flow, just hodl btc stash then sell some at the right moment after fork then rebuy back in when the anticipated drop comes.
This you cannot able to get the Bitcoin Gold since it is spliting from the wallet you using. That time itself many online wallet mentioned before the spliting evaluation starts there are many slide and pop-up in the transaction page.
Instead of investing bitcoin to change it as altcoin you can simply hold your coin. With that coins splited you can get additional income for the simply saved bitcoins.