So if I aim to achieve a bond of 5-7 days, the shaved hairs growing back should never impact the bond?

Its just that with my situation, the system would be required for the front part of my head, but I am not interested in getting a partial system as it would be too much work for me and the blending would be too much for me to worry about, so I would get a system for the whole of the top of my head, but just concerned whether this is achieveable with thick hair on the back half of my head.