-can I be home based on the x side two weeks on/off?
They only do home-basing, commuting is unofficial and entirely up to the pilot to show.

-do they offer company housing?
No

-what’s the perdiem like?
$55/day

-I’m sitting at 1275 TT and I’ll probably be over 1500 by the time If/when I’d start a class. What would upgrade times be like?
Competency based starting after 1500; there's no hard number, but a few hundred hours in type and strong recommendations seem to be the standard

-how does the 30k sign bonus work?
RTF - answered a few pages back