Missions & Complexes

running 3 clients in missions sounds a little stressful tbh. on the other hand, the rattlesnake probably flies itself most of the time. with your setup you can expect somewhere between 100 and 200 mil/hour, depending on the actual LP conversion (and effort) as well as your ways of dealing with loot.
the advantage of your setup is that it has hardly any ramp-up. you log on, accept missions and start shooting.

Meh, I find his figures rather realistic. Usually when I do a 4-6 hour long expedition (aka venture through 50 or so systems in null / low) I end up somewhere around that. Sometimes I get lucky and grab 2-3b, other times I only get like 100m or so. But most of the time I get at least one good 250m+ drop along with some bounties and overseers effects ending up around 500m or so. If anything coming up almost empty is a lot more rare then getting 1b+ on a single run.

In short I guess my advice would be:
1. DSP probing alt, makes it so much faster.
2. Don't be afraid to fly bling fits, but always use a cloak so you can get out of dodge quick.
3. CN Cloak, not T2 or CovOps.
4. Faction or T2 Ammo, I use like 4k / second just to shoot but when you're flying solo in null being faster is worth that much easily.

Using a HAMgu myself atm, but not at the right computer so can't see subsystems and I swap modules around a lot. But in short its something like:
Highs:
6x T2 HAM Launchers
1x CN Cloak

Mids:
A-Type Gistum Invuln Field
A-Type Pith EM Ward
Gist A-Type Med Shield Booster
X-Type Gist Shield Boost Amp
C-Type something Afterburner

Lows:
Flux Coil II (I think thats it)
3x CN BCUs

Rigs:
2x Warhead Flare
1x Accelerated Ejection Bay II

I think thats more or less it, split the launchers 2/2/2 so you can easily fire at 3 different targets at once, keep spamming D-Scan. Deals like 650 DPS with Javelins, 870ish i think with CN Scourge, 950 or so with Rage or whatever their called. Cap stable around 44% and tanks around 500ish DPS Omnitank without any crystals. (Actually I use the ones that make caldari target faster in the slots where I don't use +4's, can't recall name)

That said I'd swap to a Machariel if I had the skills. 7 guns + CN Cloak in highs on that would make for a ton of fun. And more DPS.

PS: T2 Launchers are a must for plexes like 5\10 Gurista since dual webbing towers out at 40km can be a ***** without em.

Small probing section:
1. Align to next destination.
2. Drop a DSP
3. Change instantly to core / combat
4. Scan with DSP while changing.
5. If good sigs, ignore all bad ones, drop core probes, if bad sigs, cancel ammo swap with cloak and warp.
6. Probe in the middle of system first, always, with 8 AU range. 85% of the time you'll get a sig.
7. If nothing there, check what planets are not covered around the edges of system, drop 8 AU probes there if only one or two, scan 32 AU if 3+.
8. If scanning 32 AU, don't aim for the dot when you get a hit, aim for the planet closest to the dot with 8 AU range.
9. Get decent probing skills so you can drop straight from say 8 AU to 2 AU probes and from 2 to 0.5 and so on.

10. Understand the exploration system, sigs are always within 4 AU of a planet so a little bit of situational awareness allows you to pick the right dot (when you get two) like 80-90% of the time. Theres lots of small hints you can pick up on to figure out where to place your probes.

If done right you often finish probing an entire system in less then 2 minutes. Less then 1 if there's only a single good sig to scan.

"5. If good sigs, ignore all bad ones"

When using a DSP probe at 256 AU with a base scan strength of 10. All potential 8/10 signatures have a strength of about 0.05 +-0.01 and all potential 10\10s are 0.02. Is this what you're referring to or something different?