I don't see any reason why the altcoin market would go down or crash again since the BTC split is behind.
I bought some altcoins yesterday right after the split and I'm pretty happy with this decision.
Time to buy? In my opinion, yes. Off course it depends what do you want to buy.
Well that's pretty good and that decision of buying an altcoin is the best option to do since bitcoin splitting has nothing to do with any problems with the network, there was no issue of any problems encountered by most users online. This was particularly a dominoe effect as of todays current bitcoin price also approaching at $4000 soon, and the predictions might have a reality if it will going to happen.