@vader47
I would suggest checking with your physician and pharmacist as to when best to take them. I was taking seizure medication but was forgetting my evening dose so my Neurologist agreed I could take all medication in the morning. It also depends on how these drugs affect you. My primary still wants me to take a cholesterol medicine at night but I think it's best to take it regularly than missing doses so I take it in the morning.
Gabapentin is probably the least potent of seizure meds although it does make many users sleepy.
They could increase side effects if taken together but your dose of each is minimal. Personally, I’d take them when I wanted unless I was having bothersome side effects but call your doctor/pharmacist!
Take care,
Jake