>>361479917
Upgrade for what games? Because that all looks fine for most VR games, so I didn't know what to recommend.

16GB RAM is fine.
If you upgrade either CPU or GPU, you might want to upgrade the other as well. However, GPUs are hard to get right now, but will be for a very long time. Don't bet on prices going down. CPUs don't need to be upgraded as often these days, but at least you can get them for reasonable prices and have a performance boost.

I'd upgrade the CPU if I had to choose only one.

I'm assuming you already have an SSD. If not, definitely get one of those. Regular M.2 SSDs are like 6x faster in reading/writing than when I bought my early SSDs, and don't even get me started on HDDs.