Vostro 460/XPS 8300, Upgrade Adventures

I recently acquired a stock Vostro-460 (XPS-8300) for trade-in/recycling. There is really nothing wrong with it other than it being older and kinda slow (still has spinning HDD). Since it is a 2011 model, the client just wanted a new one. We got them a couple OptiPlex 5050 SFF's and 24inch UltraSharps instead (and they love them).

Anyway, I was looking at this little computer closer. With this (stock) config:

Intel i5-2400 @3.1ghz (4core/4thread) SandyBridge / Cougar-Point architecture
4gb RAM (2x 2gb)
320gb WDC 7200rpm HDD
350watt power supply
Windows-7 Pro 64bit (which means it should still barely get free Windows-10 Pro 64bit)

My current Kodi box is circa-2007 with a good-ole Intel Q6600 quad-core and a AMD-5670 video-card.
If I'm reading this right, CPUBoss says this little Intel i5-2400 benchmarks twice-as-fast as the Q6600. It just has to do 1080p video (and DolbyDigital/DTS HD-Audio-7.1) but I also occasionally do some light gaming on it (actually, pretty cool on projector). Like the old one, it will be connected to Onkyo-AVR with HDMI used for all video and audio.

I've got some parts laying around, so (since it's been 7 years) I'm thinking of doing some key upgrades to the Vostro-460 (Power-Supply, SSD, video ... maybe RAM etc.) and making it my new Kodi/Steam-Box (in Big-Picture-Mode). Typically, my HTPC is just a hand-me-down or what's left anyway.

For starters, I guess I just want to check with you guys ... that this machine is worth the time and parts.