Basic question on the logic of Effects in Presets

As good professional practice, Audition only records flat. The simple idea behind this is that there are some effects which you simply can't undo - like reverb. If you decide later that there's too much, then you'd have to re-record. The basic idea is that you record flat, then make a copy of the file and play around with that - you've always got something to go back to. As an aside, I should mention that if you record in Multitrack with an effect present, that effect is only in the monitoring chain - it doesn't get recorded, so effectively the same thing applies.

Parametric EQ is fine for producing a bit of a bass lift to the voice, but generally you need to start the lift at a higher frequency than 100Hz. A gentle lift from about 250Hz will probably serve you better, although you'll have to try it and see, as I mentioned earlier. Incidentally, ou'll get far more control over what you are doing if you switch to a 30dB dynamic range rather than the 96dB one. Also, it's worth noting that you won't need the boost going right down very low for two reasons: firstly the human voice doesn't produce really low frequencies - even though you think it is, what you are hearing is based on harmonics with virtually no fundamental, and secondly you'll find that you are boosting anything else around as well as the voice. But there is a fix for this - use the HP filter as well, and whilst you're about it, don't go overboard on the amount of lift! So I'd say start from something more like this:

And experiment from there. You don't really need to alter the levels until after you've got the recording to sound how you want it, because boosting the bass will increase them anyway. You can leave sorting out the levels until after you've got the sound right.