you should be fine. as i recall, focalin XR isn't as effective as adderall XR when it comes to the duration of the drug (many users report noticing their dose not being able to last all day, compared to addeall which has a better XR mechanism, from what i recall). i would have taken the chlorpheniramine probably 6 hours after taking the drug though, just in case you're still tweaking a little.
are you asking if you'll be able to sleep? or if the combo is safe?
the combo should be fine. what source are you getting the chlorpheniramine from? does the source contain DXM in it as well? if so, and if you consumed a large amount of DXM, it could lead to serotonin syndrome, which could be unpleasant.
next time maybe stick to some weed. weed always used to help me sleep no matter what time i took an amphetamine or methylphenidate/d-methylphenidate. diphenhydramine can help too. lately ive been combining 25 mg of diphenhydramine with a little bit of alcohol to help me sleep, due to some insomnia i've been experiencing lately as a result of quitting weed recently.