Dude. Kool. This is the best cheapest upgrade that you will make. Next thing to do is what i did. Get a good mechanic and keep him at bay. You'll find out that this quad game will out you in the shop often...
your whole rigging sounded way to complex and a tad risky.. good for you going out and doing it right... saves money in the long run... and you could've gotten i cheap but hey atleast you got it... haha
my previous owner just rigged it. nothing wrong with it you can just cut all the lines and silicone screws in them and take the tank off. premix and ur good to go