Vlog - Considering purchasing 4K video equipment real soon (but not soon enough)

The cost of REAL 8K equipment (much less 12K or 16K) I have considered, is much too expensive, so I'll take what I can afford rather than put myself into a situation I cannot get out of financially.

This one I have doubts, which wouldn't at all be 8K to begin with, more like 1080p upscaled horribly, especially at THAT price point: Vivitar DVR8K 8K Pro https://www.bestbuy.ca/en-ca/product/17370304