Gear - rent vs buy & what to bring

Ok, a few of the guys who haven't climbed big mountains as much as some of us, asked me what I was planning on renting/buying vs. bringing. Here's my first take. Feel free to comment and respond with anything I've forgotten.

Of course, the RMI site says to bring all this stuff: http://www.rmiguides.com/rainier/4_day_sc_equip.html

The stuff I am acquiring is:
- ice axe (bought last week)
- bigger gators (my gators are too short for snow)
- undergarments ( figured I'd update my long underwear to more modern, wicking, material)
- boots (my boots are old, so I'm looking at getting new one's now that I can break in by August)
- new lighter snow pants or something better to hike in than snow pants

Things I'm looking at renting are:
- crampons
- helmet
- climbing harness

Things I already have are (and no, I didn't remember this from memory -- I have a cheat list that I just copied and pasted here):
- large 5000 cu in backpack
- trekking poles
- low temperature sleeping bag
- sleeping pad (although looks like we don't need due to sleeping in hut...but I'll still bring and just leave behind if don't need)
- tent (although looks like we don't need due to sleeping in hut...but I'll still bring and just leave behind if don't' need)
- stove (although looks like ....." ....." ......" )
- titanium pots
- titanium spork
- helmet light
- wrap around sunglasses that are polarized
- ski goggles
- ski hat
- multiple layers of clothing (I'm not doing the down parka, just layers); e.g. multi-layer coat, underwear, pants, shirts, fleece, etc.
- backpack rain cover
- pillow
- rain gear
- camelback for holding water
- glove liners
- snow gloves
- whistle
- baseball hat
- suntan lotion
- toilet paper
- toothbrush
- toothpaste
- allergy medicine
- Kleenex
- cigars
- lighter (one that works at altitude -- generic bic works best)
- 5 mile walkie talkies (2)
- digital camera
- extra batteries for helmet light
- blister repair kit
- drinking cup
- knee brace (I sometimes have knee problems)
- Deet (probably won't need but I'll bring just in case)
- Liquor (something that can be ported, and drank warm)
- wash rag
- towel
- contacts
- contact carrying case & solution
- watch
- coffee packages