Tuesday it starts

I'm getting back in the groove- however clumsy and unmotivated i am since I finally adjusted to the routine of holiday ease.

I didn't get up to swim, so I worked for a solid few hours prepping and then snuck into the gym for 3:30:

GYM:
15 minutes on Eliptical. (I wanted to go longer, but I decided to make my come-back to cardio slow)
5 minutes rowing machine
Upper Body Strengthening.

POOL:
I did the said workout:

350 swim
10 x 25 choice drills
6 x 100 (5 sec rest)
10 x 25 kick
350 swim

just wondering about how I should make my choices for the choice drills- should I focus on 3 drills and always change them? Should I decide on specific skills that I need to hone, and then work on them repeatedly from work-out to work-out? In this work out I did 10 separate drills starting at the torpedo kick.

I'm not very good at keeping myself in moderation for the 6 x 100's. - I was breathing heavily. In the back of my mind I'm thinking I want to shave off 4 minutes from my 1000metre swims (yeah... i guess that's ambitious). I recently met a gal named Jodi who had 3 stellar races at ironman (until the run.) She swam 1 h 4 and biked 5 h 30. It fired me up. So as I'm trying to do the 6 x 100's "moderately" I'm thinking if I go just a bit beyond that then I will adjust my fitness to having a faster "moderate." I wonder if this makes sense... Am I shooting myself in the foot?