exactly the same here. I haven't made a final decision yet, but to date the plan is to play it at launch and then sell it to buy the SX version once it's available (and trade my ps4 for SX).You are right, and I am now considering buying an XSX while I have already preordered 2077 on PS4 Pro.
Given the difference in hardware between the 2 consoles will be reflected in game's graphics quality.
(still, gamepass is sooooo good I physically need it)