My DD has BRE..She was diagnosed about 5 years ago. She is on medication as was having daily seizures. Her first seizures were similar to what you describe.
I think that the more I encouraged early nights and good sleep hygiene the longer it took for her to fall asleep. She has taken melatonin for a few weeks at a time to reset her body clock and I encourage early nights as much as possible.
I think that it is normal for children with epilepsy to have anxiety and he may benefit from seeing a psychologist to give him some strategies to help him deal with the anxiety. An app like smiling minds may also help him when going to sleep at night. It is a mindfulness app and you can choose programmes for different ages. Or maybe audio books may be relaxing for him.
I would also pop some Epsom salts in his bath every night to help relax him.
My DD was quite vit d deficient though we live in a hot country and her mood and sleeping has improved since she has been supplemented with vit d. She now takes it from autumn to spring.
I would ask for a referral to an immunologist to sort out all the allergies. He may be constantly getting sick because his immune system is busy because he is eating foods he is intolerant to.
I would also ask for throat to be swabbed and perhaps blood test for strep as even with a negative throat swab he may be colonised with strep. He may need a longer course of antibiotics to treat this. Immunologist may be able to help with this.
I think the allergies, asthma and tonsillitis are probably not related to the BRE but who knows.
A sleep deprived EEG is a really good idea. My DD has had them every time things have changed.
If you are on Facebook I suggest you join some BRE parents support groups . They can be good sources of information however are often US based.
Also have a look at the following link.
epilepsygenetics.co.uk/wp-content/uploads/2014/04/Rolandic_Epilepsy.pdf