I've started taking my lamictal at night with the trazodone I am using for sleep because it's far easier to remember to take both at the same time and also easier to remember pills before getting into bed rather than after I get out of bed. Of course, these are just two and don't really touch upon your issue here.

Personally, if it comes down to forgetting meds, then I thinking taking them all at a time you can remember is the best solution as long as no dangerous interactions can occur (and if they did....well, that's dangerous that you're taking them together at all.).