I don't know about the 435's but I'm sure they are a cheap injector like 370's. If your serious about making big power then don't skimp on the injector, now if you want a set to run as a second set that's fine. I run a set of 370's also but have a big set if Industrial Injection EDM's Dragon Flows. You can make 700 with 370's but it takes allot of pump to do that. I run a I. I. Tweaked 215 pump and 370's right now and that nets me 600 on #2.
The only street single I know of that will makes 700 hp without spray is a Silver Bullet, I run a lesser version, a SPS 66 with a ported housing, a Bullet update is an 07' project.
One avenue you could go down is find or buy a 215 pump and send it to a good pump shop for a checkout, tweak and check and run that till you run out of fuel. Then if for some reason you need more fuel you could then send it in for a P&B swap to 13mm's as the 215 cam works great with that setup.
Jim