If you switch to some cheap slim fan and overheat, there is a much higher chance of the sleeves heating up too far & cracking. SPAL fan or stock -- nothing else, just FYI.
Make sure you run a restrictor in the feed line, ~.060" is good. The return line looks a bit small and too long. Chances are you'll have to bend it to fit the spot you choose, which will cause oil to back up or puddle - very bad situation for the turbo's seals.
Regardless of getting a VAFC+bypass for free, you can still sell them & get a decent street tune instead. Its like getting a pink louis vuitton luggage set when you're thinking about traveling - you wouldn't keep them, you'd flip them for a profit & get manly shit. Getting a wideband + display would also be a good idea, at least for the future if something decides to crap out on you enough to change the tune.