Nice, you basically bought the final form of the P01...only things you might want to do to it next are buy/fit a threaded barrel for it and...er...well, maybe fatter grips if you wear XL+ sized gloves like I do
I have a
JM Custom Kydex AIWB Wing Claw 2.0 for mine, set up for a threaded barrel and suppressor height sights (I had a P01 Omega suppressor ready, sold it for ...not great reasons...and bought a P01 Decocker in it's place). It disappears. Sadly my P01 is down waiting for some spare parts (I broke the lifter spring while cleaning up the action and reassembling, something you won't need to do to your SDP) so I don't have a photo of it in the holster.
I'd recommend the extra tuck option, and the full guard as well, to cover the decocker. You might want to spring for getting the optic cut as well, simply to give you options later on down the line. If you plan on AIWB carry, this is easily your best buy; I've tried a bunch of other AIWB holsters and JMCK really hit all the points with theirs IMO.
As far as bullet weights go I honestly haven't noticed any issues with mine on that regard but then again I've really only put 147s through mine, and not all that many tbh...when mine gets all buttoned up and to the range next time, I'll try it with some 115s, 124s and 147s and see what it likes more. I really hope 124s and 147s perform well, as my normal SD rounds are 124+p and 147gr HSTs...and I don't want to stock another bullet weight just for this thing