IMO there's absolutely no need to hire consultant for PR application unless your personal situation is complicated and may have legal implications, in which case you might want to hire an immigration lawyer
Nope, there is no need for a consultat unless you are in a complicated situation where you need their legal guidance. Also be aware that you wont even be able to access your file if you use them as they wont share it with you and all updates will go through them, which could be quite frustrating.
They in no way can give you better chances of finding a job. And housing is few clicks away, everything is online now, from hotels to b&b's to long term housing, its all available and accessible to everyone everywhere.