New to 300/221 and to reloading, could use some help.

[alorton]

Ok, I'm new to reloading and to the 300/221. I wanted a suppressed AR and the 300/221 seemed like the best game in town. I've been lurking on this board (and AR15.com) for quite some time and have posted a few questions. I've picked up parts and equipment over time as my budget would allow. Here's what I have:

Upper:
ASA Side charger
Noveske 10.5" 300FB barrel (pistol gas port position)
Paladin Machine 3-position gas block
YHM free float custumizable tube
RRA complete lower (w/SBR stamp)

The rifle is done. I purchased the barrel used and it came with about 100 once fired brass cases. I have 100 240gr SMK's and 1lb of Lil Gun and 1lb of AA1680 coming (figured I'd try both). My YHM 7.62 suppressor is in and I'm just waiting on the ATF to finish with my paperwork to pick it up.

I have purchased a Lee 4 hole turret press, a Redding 300/221 3 die set, and a Redding form and trim die.The Lee press came as a "kit" with a case trimmer, powder measure, case chamfer tool, etc. I also have a chronograph to check muzzle velocity.

I want to make 300/221 brass from .223 brass. The Redding form and trim die didn't come with any instructuctions. How do you use that?

As far as I can tell, getting a Forster power trimmer is a good way to trim .223 brass for this application (hand trimmer would take forever). What collet and pilot should I use? I assume the same collet and pilot as for 223 but will the case start to chatter once I get to the shoulder and the inside diameter expands? Is there a better option? (I won't be making brass by the thousands, but would like to have several hundred)

Since the SMK's have no cannelure does that mean I can't crimp them? Everything I read says not to crimp uncannelured bullets but I'm concerned about uncrimped bullets in an AR.

Is there any other equipment I should look at? Any good loads to start with for my application and the two listed powders? Recommended case trim length (I saw the 1.355" thread but the brass I got with the barrel measures 1.365") and recommended loaded overall length? What velocity should I go for in normal conditions to make sure I stay subsonic, even into the single digit temps? Any other tips for a beginnig reloader or a beginner to the 300/221 (both apply and any advice is appreciated)?

Sorry for the noob questions and thanks in advance.