It's a bit hard to tell the exact way that the song you linked uses it… each to their own; and the old "many ways to skin a cat" scenario.
Regardless, I suggest (if you're gonna use an 808 sample):
There's plenty of bass and sub in an 808 kick. No need to separate out and layer with another bass if you don't want to…
Use a sampler; and place the 808 into it… tune it (a single note)… then you can play it like a bass line.
EQ - well look… it's hard to give clear advice here, cause eI don't know what your sample sounds like… but --> here goes:
EQ ---> Compressor (ideally multiband; but I'll talk single band for now):
Turn comp on with light settings (2:1; 30ms att; 60 dec; threshold anywhere below 0)… this helps control during sound design when boosting eq freqs.
Boost low sub with a medium to low Q parametric, boosting slightly (say 2-4dB) at the basic sub's harmonic for the key of the track (around 60Hz) basically - boost a lot, and it will distort… then drag it back until you feel good about the boom being emphasized… same technique for all eq here;
Boost the low Mid at the fundamental with a tight Q parametric (e.g. twice the sub freq… or even 3 times… this is to give the proper chest-whack more punch)
I can here top end in your example; so with a broad Q boost around 1 kHz - 2kHz to taste… this adds the thwack… (different to "chest-whack ;P)
Once you have this sounding as you want; scan an eq mid cut around to see if it tidies things up.
Then adjust the threshold of your comp down to get it "controlled" more evenly… the above attack / decay(or release) settings should be fine as a starting point.
Like I said; a multi band compressor will be much better at this (well actually a multi band comp/expander), allowing you to craft the sub; low mid (whack); high mid (thwack); and highs (click)… but the principals are roughly the same.
----> doing this to a single hit and then resampling may be a better result; but in reality the above basic approach will work.
Also keep in mind that thousands of producers new and old are against "boosting" eq's… I'm not one of them; and they're designed to do it. I find this approach to eq particularly useful when reinforcing key areas of drum sounds… it's a a lot easier to find the dominating parts and boost them than it is to cut away every other part of the sound properly!!
If you want a little growl in there; try adding some very light distortion (e.g. tube simulation) in there pre eq (to stop the sub boost messing up and over distorting).
Worst to worst; send me the sample and if I'm in a good mood I can process it for you and run you through exactly what I did
---> mood pending though haha...
