How much do you want to carry? I've got a Phantom Plate carrier, so fewer loops than what the one you're looking at, and it'll take 10 M4 mags, 4 M9 mags, radio, bayonet, water bottle and 6 flashbangs no problem. Never been in ACf so no idea what you'll need for that, but for airsoft it'll be more than good enough. In the past I've done the odd mil-sim event using real cap mags - for this I found wearing a chest rig over the plate carrier worked quite well, as it gave me the ability to carry another 10 mags, but I could take it off in about 10 seconds if I wanted to crawl forwards. Once it was done it just got bundled into my backpack and all good. This might be a good option, depending on how much you're carrying?
Also on that subject, depending on how tough you need the vest to be, it may be worth going for a far cheaper vest. For airsoft use, I've found £30 plate carriers to be just as good as £100 plate carriers. Obviously they won't be nearly as durable, but for running around the woods and crawling through ditches they're all pretty good.
Viper are pretty good, even if they are a bit standard. With the weather so ridiculously hot atm, I'm starting to use one like this now
http://cgi.ebay.co.uk/VIPER-MODULAR-VEST-C...G-/190520378667?
pt=UK_Collectables_Militaria_LE&hash=item2c5be6452b#ht_1233wt_1117
If not I'd go for one of the good old osprey vests - they're not the most fancy, but they're absolutely covered in MOLLE, and are designed for use in stupidly hot environments, so a good choice.
http://cgi.ebay.co.uk/MLCE-Osprey-SAS-Moll...a#ht_1234wt_883