thanks for all the input.
this machine was my "daily driver" for a few years, until i moved and it went unused for 3+ yrs.
i tried to give this PC away earlier this year unsuccessfully, so parting it out for money seems like a chore.
i debated going a simple raspi set up, or a older tablet and an external drive ( i have both available).
this also gives me a chance to use some older HDD's and not worry about when they fail.
im not sure what the wattage is on the PSU, but im pretty sure its alot higher than 300.
ive had good luck with kodi but will look into plex.