In my opinion, a air cooler like Peerless Assassin SE is enough for 7800X3D. And if you still want an AIO cooler, a 240mm AIO or larger will suffice...
I use the CORSAIR DOMINATOR TITANIUM RGB DDR5 RAM 64GB (2x32GB) DDR5 6000MHz CL30 AMD EXPO iCUE Compatible Computer Memory. Works great on my 7950X3D.
I vote for Oneplus Pad.
Any specs of this CPU ?
I use the iVANKY 8-in-1 Docking Station, works great with my ROG Ally X.
The DELL WD22TB4 with 180W Power Delivery is compatible with latitude 5540. It works well, never has any issue.
Hope during Amazon Prime Day this laptop will be much cheaper.
I also recommended the ASUS TUF Gaming 27” 1440P HDR Monitor (VG27AQ3A).
Don't forget Newegg, they usually have some great deals during Prime Day.