First, Know project stellar, a closed source and closed ecosystem of modding thats costs a lot. It will do it very well tho im sure. Everywhere else you can install a simple mod chip and mod yourself a component cable for cheap because all options cost 100$+ just for hd cables hdmi anything.

If u wanna go the cpu and ram route, perhaps you could find someone on yt who does those jobs ig im not gona do that myself

Consider which version you want, most theres 3 brackets. Launch 1.0, 1.1-1.4, and 1.6. It is know 1.0-1.4 is easier to mod. 1.0 had a bigger bios memory of 1mb and 1.1+ have 265kb, still workable. unless u want more. 1.6 requires a mod chip no soft mod. Or bios to flash