Hiya Sam. I have two different honeysuckles growing up an arch as an approach to a small sitting area. Behind the seat I have a summer jasmine and you are right about the wonderful scent comi g from these plants. It's good to hear you are planning with your blind friend in mind so it's a garden he can enjoy as much as you can. Thats lovely i think. I share your desire to have as many scented plants as possible....I have, winter honeysuckle, daphne and witch hazel as well as daffodils like sweetness.... for winter and early spring. Fragrance in a garden is often overlooked. Have you thought of planting lemon citriodora....fantastic lemon scent.....and salvia elegans......strong pineapple scent.? I grow them in pots on a pathway. Very tactile plants from spring to late summer that give out strong scent when touched or brushed against. Keep us posted Sam.