I'd agree with the majority of what's been said.
First off...from the very beginning I seperated hammock and tarp. For most of us, there's too much sag in the tarp if you attach it directly to the prussics provided on the stock HH ridgeline.
So...you can either use a seperate ridgeline, or just attach rope to either end of the tarp and use Fig 9s/tarp flyz/etc... to adjust your tarp as needed.
Storing your tarp seperately, either with it's own stuff sack or even better with it's own set of skins is also a much better option.
With that said...I'd spend a few nights in the hammock going through some of your own learning curve before making any further changes.
Remember most folks prefer to have their feet slightly higher than their head. The closer to the hammock that you hang the tarp, the better the rain coverage but the less air flow you're likely to get...and vice versa.
Do a few test hangs, get a feel for what you like and dislike...then consider mods to address things that you dislike...if you even need them.