I have a few questions about companion planting with raspberries.

First, I have some Purple Royalty raspberries and just recently, the baby deer have been eating the leaves off the stems. I'd like to plant bee balm between the plants, which seems to keep the deer away. Would this change the flavor of the raspberries?

Second, I would like to plant some red raspberries, but I have concerns about them spreading into other areas of the garden. There's a very old lilac hedge (about 60 years old) on one edge of the yard. If I plant the raspberries against the hedge, will they hurt the lilacs if they spread into that area? To keep the deer away, would it hurt to plant spearmint in front of or around the raspberries?

Thank you for any help or suggestions :)