we have been slowly cord cutting as well, when the kids are a little older i will completely disconnect the tivos as the price is becoming more of a joke daily.
Heres what ive done so far
set up a mac mini, 8tb nas drive - Set up plex media centre on the device.
I then have a few android devices attatched to the tvs, and a couple of chromecasts.
I also have NOW TV boxes (plex will install to these)
I now sub to netflix and now tv, i also have the useless amazon on demand which dosent seem to work on any device i own atm.
As things are now i pay about £90 per month for 150mb and three tivos - I was paying £150 pm with movies sports, but a quick switch to now tv and xbmc im paying about £60 less per month in total.
If your only really after discovery channel and some sky line up check out the now tv entertainment pass - i think that works out about £5 per month but you can get better deals on the interwebs if you look about,.