It's worth seeing if they have the module list on the website as I've always found that people taking two subjects end up doing the more 'boring' modules. I can see that they have the module list up so worth comparing it with straight psych to see if you're missing anything you really wanted to do etc. It may also be worth checking if you (if taking straight psych) can select optional modules, so that you maybe take more that you prefer if that makes sense. For example you may prefer the general psych modules, but if you can take the crim modules you are interested in through the psych degree, thats an option too.
For psychology, it's also worth checking if its BPS accredited (if you might want a career in Clinical/Health psych etc (UPDATE: it is))
I think obviously being the first cohort its always a risk, but they are such a well ranked/respected uni and it should make logical sense that the course would be good/well run, but again, you can't exactly predict it.