Framework Laptop Community

I've not been as excited about a piece of tech for a long time. I'm trying to save a few bucks on this somewhat expensive machine and have some questions, which I hope you might be able to answer. Thanks!

I'm planing on bringing my own RAM and storage. Framework lists DDR5 SO-DIMM 5600 as compatible, however they do recommend avoiding XMP. Most modules I found do have XMP. Do they just mean to disable XMP? Any ideas or recommendations?

I'm also hesitant to buy the 180W charger, even though it seems reasonalibly priced. I'm not buying a grafics module just yet, but might in the future and 180W might not be enough power by then. I only want to buy once and couldn't find any higher powered ones on amazon (EU). I only found one 140W charger from UGREEN, which is a brand I've never heard of. Another option would be, to buy a 100W charger now and another one later, but I want to reduce cost and e-waste.

One last question is concerning the input modules. Do I understand it correctly, that both the numpad as well as the macro pad can be used for custom key functions and macros?