schedules are meant to be altered, right?

once again, I'm looking for your thoughts, suggestions and advice.

I totally forgot about a small little local event this friday, the Trek or Treat trail run.  I had signed up for the 10k event months ago, and even though I'd be only doing this for fun, I think I'll ask the race organizers to change me to the 5k event. I don't want to risk doing too much too soon. 

But that's not my issue.

This week I start running on alternate days, starting tomorrow... 

• Tuesday -- 2m walk/8m run
• Thursday -- 10m run/2m walk/10m run/2m walk/10m run
• Friday -- 5k race!
• Saturday -- 12m run/2m walk/12m run/2m walk/10m run
• Monday -- 15m run/2m walk/15m run

"The plan" doesn't start me running back to back days for another 2 weeks, so 3 days in a row is obviously not ideal.

Here is what I was thinking so far:

• Run Tuesday, Thursday morning, and Friday's race at night... skip Saturday, replace with a bike ride, no run again till monday
  
• Skip Thursday's run, have fresh legs for Friday, and run Saturday only if feeling ok, continue with plan on Monday (but that's 2 days off again...)
• Run tomorrow, skip thursday, 5k race friday, skip saturday, short easy run sunday, then monday's planned workout.

I know, it may not seem like a huge deal, but I'm really trying to increase the distance & time slowly, and as described by the schedule.  I'm not sure a 2 day gap will hurt much this early on, but I don't want it to be too much of a change in distance between runs, etc.  On the other hand, I am not sure if running back to back days a few weeks early is recommended. The race sounds like a lot of fun, and I registered with friends, so I really want to fit this in...somehow.

So now I leave it in your capable hands... any of the above sound like a decent idea? Or other thoughts?

Now if some jacka$s comes out of the bushes to scare me, and I fall or something and re-injure myself, I'll be pissed... LOL  Let's just hope that won't be the case.