So I will look forward to install a SPR masternode on one of my raspberry Pi's then, and run it from my home?

If I understood you correctly we come closer and closer to one day have our masternode INSIDE our wallet? Having them both be the same thing if a person desires? (Another person might desire to run a big server why not)
You can run bitcoind on a pi with a bit of effort but spreadcoind in Masternode mode is going to have a shitload more overhead, I don't think a pi is going to cut it. Plenty of better spec'd cheap little SOC boards out there though.
And a Masternode
is just a wallet with some linked collateral, I regularly use a wallet that happens to also 'be' a Masternode.
Maybe a banana pi?
Maybe I will just designate one of my pcs and make it a home-run-masternode.
I think my internet connection is fast enough, and from march onwards I will have fibre at home (down/up both 100MBit)
But security concerns me quite very much, since you will not only compromise a server, but your whole home-network this way.
But if I understand Mr.Spread correctly, SPR masternodes will not necessarily need to broadcast their IP, so this could be a good thing...
So regarding the overhead of a masternode, how much CPU / RAM does a darkcoin masternode usually need to successfully run?