Use my new PC now and add 2nd HDD later or wait to get both HDD's?

[Tunnel_1]

I have a 128Gb SSD and am getting a 1T HDD in a couple days. I am going to put the OS and most played games on the SSD and everything else on the HDD. I really want to start playing on my new PC but I don't know if I should wait or not.

 

[clutchc]

If your games are Steam games or Origin games, it may be best to wait. Otherwise, you'll have all your future games installed to the C: drive's Steam (or Origin) directory and run out of room.
However, there is a work-around. You can move your steam games to the new HDD when it comes by following this guide.
https://support.steampowered.com/kb_article.php?ref=7418-YUBN-8129
Origin games can be moved following a similar method. I've done both.