I prefer flare over barbed fittings. Little bit extra up front, but easier to work with if you want to swap ball to pin or sanke.
I have two pin locks, so I only keep two of the gas lines and two of the beer lines with the MFL fittings. Are the others are barbed. It's not like I'm going to be swapping out 10 other lines anytime soon! So while convenient for us weirdos with ball and pin lock kegs, not a must.
I love my co2 charger for taking kegs places.
Be careful with these. I used to love mine until I shot the CO2 into my hand, blowing a hole into my hand and rupturing the skin. 3/8" wound for a few weeks was no fun! I'm still scared of the thing.
Dip tube brush is nice to have if you don't have a way of effectively cleaning them.
YES. And be sure to get one that is longer than your dip tubes. I have two, one that goes 2/3 of the way and one that goes completely through. The 2/3 one is collecting dust.
Keg lube is a must. I apply to all rings when assembling, lid ring when sealing, and post rings when attaching to the lines.
Definitely saves headaches when searching for gas leaks. Gas leaks are the WORST.
BLC for cleaning lines. Oxyclean and pbw work ok, but proper line cleaner is superior for cleaning nasty stained lines.
Build one of these line cleaners too. Might take some effort to find a post with the proper threading, but it is easier than using a keg and cheaper than the proper line cleaner pump bottles that run near $50. Plus, those proper line cleaners work from the faucet, not the disconnects.
http://www.homebrewtalk.com/f51/diy-beer-line-cleaner-226497/
I have one of those line cleaners that I keep BLC in, and might build another as a dedicated StarSan holder. When we blow a keg, we immediately run BLC through it. Otherwise the foam in the lines dries up, is impossible to get out, and you end up replacing your lines - which gets expensive.
Perl Faucets are more expensive, but the standard ones stick if not used every day... get the Perl's up front or you will find yourself replacing them later.
Yep. Just buy stainless everything. No point in buying something that you're just going to replace later. I have the 630SS faucets and they are niiiiice. They have a shorter throw on them, kind of reminds me of a short throw shifter. Haha.
ALSO - I added different colored electrical tape to the ends of my beer lines. For instance, a line running from a keg to the first tap is marked with green electrical tape at the keg end and at the tap end. The second keg/tap is white and so on... I also have black gas line, not clear. Kegerators become a tangled mess of lines quite quickly so anything you can do to tame the madness will help in the long run.
If you have room on your manifold, have a dedicated line for an inline gas quick disconnect (
http://morebeer.com/products/beer-gas-tubing-quick-disconnect-14-barb-female-shutoff.html). I have a dedicated one and can clip in whatever I want. Right now, I have it set up for the Beer Gun only. But once I get around to it I'll have two other clip ins, one for a long-length gas side ball lock QD and another for a gas chuck for topping off carboys in the sour area.