hey Wing,
assuming avcr is at 1500rm without installation, and tuning, i rather have you getting a boost controller then a Defi, avcr serve more then just high boost and low boost, it have a self learning of your boost characteristic and then can do boost base on gearing ratio and boost base on rpm, and it's better then a fish tank boost controller, i can recommend you another 1 try checking out blitz dsbc single solenoid boost controller selling at 1krm at ksp shop at sunway, if i'm not mistaken the dsbc dual solenoid is selling at 1600rm, function wise is almost the same as avcr. and ksp is selling apexi boost meter for 360rm or wassit 370rm only, so look at it if u have 1500rm to spend, get a blitz dsbc and a boost meter, less then 1500rm, so basically that solve everything. or pm this user, cannondale, he got a used greddy profec boost controller to sell as well.