Viper,

In my opinion, temple flaps are necessary if you want a lower hairline. The reason is because it gives you a narrower forehead (more hair on the side = more narrow looking forehead).

You are an older gentleman (and I say this in the most respectful way), so I don't think a lower hairline would suit you.

What I do notice from the photos is that you still have thin hair on your temple. This is great because another option would be getting dermatch and darkening those temple hairs. This allows you to naturally bring down your hairline to a place that is in proportion to your temple hair.

Have you ever noticed people with a low hairline, yet they don't have that sharp angle created by temple hair? That is a dead giveaway for me.

Good luck!

Leamon