Re-installing FCS3 on Leopard - what updates do I need?!

I'm trying to do a clean install of Mac OS 10.5.8 with Final Cut Studio 3, but Software Update isn't helping me update everything to the latest available version.

Here's where I am so far:

• wiped HDD clean using zero data
• installed Mac OS X 10.5.6 from DVD
• installed 10.5.8 Combo Update
• ran Software Update, which downloaded and installed the following:

Security Update 2011-004, Java for Mac OS X 10.5 Update 5, iTunes 10.6.1, AirPort Utility 5.5.3, Remote Desktop Client Update 3.4, Performance Update, Migration Assistant Update, Front Row Update 2.1.7, iLife Support 9.0.4, Safari 5.0.6, Java for Mac OS X 10.5. Update 10

• installed Final Cut Studio 3 from DVD

Then when I ran Software Update again, it didn't show any updates for Final Cut Studio! It won't even tell me there's a QuickTime 7.7 update available. I guess that's because Apple has dropped support for old versions of FCS in the wake of Final Cut Pro X. Thankfully, it looks like all of the updates I need are still available through Apple's support site, but I'm looking for some advice as to exactly what I need to install, and in what order.

I see the following updates available for Leopard and Final Cut Studio 3:

• QuickTime 7.7 for Leopard
• Pro Applications Update 2010-02
• ProKit 5.1 (Leopard)
• Plugin Manager 1.7.3

My questions are as follows:

• Are there any additional recommended updates not featured on Apple's site?
• Do I need all four of these updates, or will simply the QuickTime, ProApps and ProKit updates suffice?
• Is there a specific order I should install these in? I'm guessing Plugin Manager, ProKit, ProApps, QuickTime as that's the order in which they were made available, but Plugin Manager pre-dates my installation of FCS3, so not sure about that one. I don't want to install older files than the ones in FCS3!
• Is there any known downside to installing these updates manually, or is it more reliable than the now-defunct Software Update method?

My sincerest thanks to anyone who can help. I want my FCS3 installation to be perfect as I don't intend to do it again if I can help it.

Thanks again! =)

Thanks for the reply! I've no trouble downloading the updates - they are still available on Apple's site, and I even linked to them in my original post. My question was rather which ones I need, whether my list is comprehensive, and what order to install them in.

As for the reason to return to Leopard... well, I've actually been running 10.5.8 quite happily since I got my MacBook Pro three years ago, but I had to use a fancy plug-in for a client and it required Snow Leopard so I upgraded my system (from scratch, I might add) and hadn't the time to clone my system first. I soon found a few quirks in Snow Leopard which annoyed me:

1) The Finder was sluggish in column view, which is the only view I use. Before you suggest that my system is at fault, this was on a totally clean install. I've always found SL that way when flicking through folders.

2) Screen Capture is less reliable, and I use it all the time to get great stills from HD video in Final Cut Pro. Sometimes it'll capture a blank screen, even when there's video on the screen, and other times it'll capture the wrong frame. Weird, and not something I can live with.

3) I could never figure out monitor calibration. Setting Gamma 2.2 gave me slightly darker results than Gamma 2.2 under Leopard, and I have no idea why. Looking at the profile, my calibration seemed to be closer to Gamma 2.4. Again, this from a fresh install on a three year-old MacBook Pro. Weird.

Nothing else wrong with Snow Leopard really, and I'm sure FCS3 works great on it. In fact I've created a separate partition just for Leopard this time, so I can stay content in my old ways forever whilst getting the benefits of SL, namely Compressor 4 and FCP X when the time comes.