I like this thing, but I fail to see why it needs to be higher. Looks like you have plenty of room for rear uptravel and if you just do tube fenders in the front or trim the ones you have, there's room in the front for 2-4" uptravel. Should be plenty, just bump stop it. Its got a nice stance now , id like to see you keep it there. Remember too, its gonna have some body roll w those springs in so close. Combine that with a torquey new engine and a couple inches more height, could end up tippy, or atleast have a pucker factor. The axle width is helping you a lot, but...
Check your front shackle angle too, those springs are flat or as long as they'll ever be through the suspension cycle. If its not too late, I might would cheat the shackle hangers forward a bit. Especially if you do go to a lift spring.
I like where this thing is headed, just trying to pass along some friendly advise. Ultimately its your rig though. Good luck on finishing it up. Im interested to see how it turns out