Training for Half (70.3) Triathlon

[dknightx]

Recently i've become interested in the idea of doing at least a half (70.3) triathlon sometime in my life, and it figures that now is probably the best time in my life to train for that.

Currently my workout schedule is as follows:
Monday -
4 mile run
20x20, 25 pushups, situps for time
5xMAX pullups
20x15 dips for time
~1500m swim (broken into sets)

Tuesday-
Budo class (not super intense)

Wednesday -
3 mile run
20x20, 25 pushups, situps for time
3 sets of 2/3 * MAX pullups (based on running avg of monday's workout)
20x15 dips for time
~1500m swim (broken into sets)

Thursday -
5 mile run
Lower ab workout
6 x (2/3 * 2/3 * Max) pullups, 3 sets wide, 3 sets reverse grip
~1500m swim (broken into sets, with a tabata swim thrown in the middle)

Friday -
600m repeats (1 minute rest between sprints)
20x20, 25 pushups, situps for time
3 sets of 2/3 * MAX pullups (based on running avg of monday's workout)
20x15 dips for time
~1500m swim (broken into sets)

So i've been doing this workout for the past 3 months, and have done it for about 1.5 years straight before taking a 1.5 year break (for personal reasons, did some xfit once in a while during this time).

The plan right now is to increase swim distance to 2000m by end of January 2008, and also work towards doing 20x30,35,25 (pushups, situps, dips) by that same time frame.

So yeah, thats basically what i've been doing, however, i am currently aiming at doing 70.3 triathlon next summer (when most of them are run), so the question is, how should I change my workout? Does it need a complete revamp?

The main things that concern me are the biking (56 miles), which i dont particularly enjoy, nor do i have the experience in. Whats the best way to incorporate this into my training?

Also, the run (13.1 miles), might be ok even though I haven't really run more than 7 miles in the past 3 years, although i FEEL like i could tough out 13.1 miles (running at a relatively slow 10-11min/mile pace).