im not so sure either of these are good value for money, before considering theyre from aftershock. the 7800xt should run popular sims like forza and assetto very well, even at 4k since theyre fairly easy to run, while delivering at least 80% of the performance of the 4070tiS in general. the 7700 also doesnt provide that much of an uplift over 6-core zen4 parts like the 7500f/7600/7600x, its only when ur using a 78x3d where u can see massive gains in assetta at 1080p for eg. personally, id settle for a 7600 + 7800xt for 1.3k or a 78x3d + 7800xt for 1.7k (cheaper than the linked as 7700 + 78xt), both from invaderpc, and a cheap ram upgrade would be enough, though i would lean towards the former as the 78x3d is quite overpriced now and the next gen of x3d cpus is arriving next week. cpu performance is also less of a concern at higher resolutions like 4k, so the 7600 shouldnt be too far behind the 78x3d at this resolution while saving a huge chunk of change.
if u can wait, sure.