As it happens I've been riding 5.8 Hollows with 1/8 risers for the past 4 weeks or so, so I can provide some first-hand experience.
First of all, it goes without saying that the trucks alone don't make or break your setup. Ventures paired with a short-wheelbase deck will work differently than on a long-wheelbase deck, etc. I'm trying to only make general statements to keep things as simple as possible, though.
Ventures are definitely the most non-responsive trucks out of the main brands. What I mean by that is that it it takes more weight shifting to initiate a turn. If that's a positive or a negative comes down solely to personal preference. I love them for bombing hills because for me, the risk of wiping out is reduced significantly. I'm on the larger side and don't have perfect balance at all times, so I'm prone to unintentionally shifting my weight. Ventures have more leeway before they actually turn. At high speeds, that's a lifesaver for me. For other people, it might be the opposite because they rely on the ability to turn very quickly.
Concerning the pop angle, that also comes down to what you like. I love high trucks and risers because I like working a little harder for my pop and therefore prefer a steeper angle. I can ollie higher that way and get more consistent flicks. On the other hand, a more shallow angle makes your tail hit the ground faster, so you don't need to kick down as hard to pop. Many people prefer that because it can feel more responsive and requires less force.
Bigger wheels go well with this setup because they provide even more stability and a smoother ride. That may be negligible for people who don't skate crust often, but for me it's vital.
All in all, I can definitely recommend forged Ventures with risers and big wheels if you wanna go fast and have great stability on less-than-perfect ground. It's definitely not a good combination for tech wizardry though.