Just a thought. If you lower your hairline that low (below Norwood 1) and then later decide as you get older that it does not look natural, you may regret it.
Then, the only option to raise that hairline would be to have the grafts removed with FUE or electroalysis.
Your thread caught my attention because I have assisted more than several men over the years that had their hairlines initially lowered to a juvenile placement and then wanted to raise them later.
What happens is that the thinning goes on in the frontal zone and midscalp as they get older so the commencement of their low hairlines appear distorted and causes "eye" drift.
Either way, I hope that you are happy in your final decision.