Grivel G1 crampons ok for me?

Let me preface this by saying I have no idea what I'm talking about when it comes to crampons…

I do have a knack for finding deals though.

http://www.camp-usa.com/products/crampons/closeout/ice-rider-44408.asp

Not nearly as light as aluminum (like the XLC 390-490 by CAMP) but they are fairly inexpensive for a full crampon.

I haven't used the G1's but judging by the pictures they would do you just fine. They will get along with those boots fine and be ok for all sorts of walking and french technique. They will add security when kicking steps, just don't plan to do any real front-pointing in them. Your boots wouldn't put up with that either. I'm sure they will last quite a bit longer than aluminum.

I would reconsider aluminiums.

They're half the weight (you shave almost a pound). They will not last as long – particularly if you wear them over much rock. You do a bit of this on Rainier in the late season – but having owned 10 point steel, 12 point aluminium and now a 12 point steel set for ice – I wish I had skipped my first 10 point steels and jumped directly to the aluminiums. Shaving a pound on a long slog is worth quite a bit :)