keep your all day transit pass handy! LOL. works great at flatting out the hilly parts.
seriously though, if you are doing it for the first time, try to lighten up your load and bring only the essentials. with hills and since it is only around town, there is no need to pack a lot and it just becomes extra weight to carry up the inclines. with the fantastic weather we have been having lately and if you are planning to do it this week, there would be little need to wear too much, so best not to over dress, again hills will bring your internal temp up rather quickly and you will be sweating.
it does get a bit cooler depending on the parts of UBC you plan to hit, so a light windbreaker would be useful if you are planning to ride later into the evening.
anyways, should be a good ride. have fun.